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HTML

              
                <div id="app">
	<div class="container">

		<div class="main">

			<div class="title">
				<h1>Musical Bubble Sort</h1>
			</div>

			<div class="graph">
				<transition-group name="list-complete" tag="div" class="graph__bars">
					<item v-for="(num,i) in unsorted" :num="num" :music="music" :modearray="modeArray" :key="num" :class="arrayClass(i)" :ref="num" class="graph__bar"/>
				</transition-group>

				<div class="graph__randomize">
					<button @click="randomize" :disabled="!controls"><i class="fas fa-redo-alt"></i></button>
				</div>

			</div>

			<div class="bass">

				<div class="bass__title">
					Bass Pattern
				</div>

				<div class="bass__notes">
					<div v-for="(note, i) in music.bassPattern"  class="bass__box" :class="{'active' : note}" ref="bass">
						<label :for="`box-${i}`">
							<input type="checkbox" v-model="music.bassPattern[i]" :id="`box-${i}`">
						</label>
					</div>
				</div>

				<div class="bass__randomize">
					<button @click="randomizeBassLoop"><i class="fas fa-redo-alt"></i></button>
				</div>

			</div>

			<div class="begin">
				<button @click="beginSort">
					<span v-if="controls">begin</span>
					<span v-else>stop & reset</span>
				</button>
			</div>


			<div class="controls">
				
				<transition name="pop-down">
				<div class="toast" key="toast" v-show="toastActive" ref="toast">
					{{toastMessage}}
				</div>
			</transition>
				
				<div class="info-header">
					CONTROLS
				</div>
				
				<div class="controls__data">
					<div class="controls__key">
						<div class="controls__key-title">
							Key
						</div>
						<select name="" id="" v-model="music.key" :disabled="!controls">
							<option value="C">C</option>
							<option value="C#">C#</option>
							<option value="D">D</option>
							<option value="D#">D#</option>
							<option value="E">E</option>
							<option value="F">F</option>
							<option value="F#">F#</option>
							<option value="G">G</option>
							<option value="G#">G#</option>
							<option value="A">A</option>
							<option value="A#">A#</option>
							<option value="B">B</option>
						</select>

						<select name="" id="" v-model="music.mode" :disabled="!controls">
							<option value="M">Major</option>
							<option value="m">Minor</option>
							<option value="L">Locrian (caution: spooky!)</option>
						</select>
					</div>

					<div class="controls__tempo">
						<div class="controls__tempo-title">
							Tempo
						</div>
						<input type="range" id=tempo min="0" max="200" v-model.number="music.tempo" :disabled="!controls">
						<label for="tempo">{{music.tempo}}</label>
					</div>

					<div class="controls__seed">

						<div class="controls__seed-title">
							Seed
						</div>
						<input type="text" id="seed" ref="seed" @keydown="handleSeedInput" v-model="seed" @click="selectSeedBox">
						<div class="controls__seed-buttons">
							<button @click="setSeed($refs.seed.value)">set</button>
							<button @click="copySeed">copy</button>
							<button @click="saveSeed">save</button>
						</div>


					</div>
				</div>
				<div class="controls__saved-seeds">
					<div class="controls__saved-seeds-title">saved seeds (click to activate):</div>
					<p v-for="seed in savedSeeds.seeds" @click="setSeed(seed)" class="controls__saved-seeds-seed">
						{{seed}}
					</p>
					<button @click="clearSavedSeeds">clear all saved</button>
				</div>
			</div>
		</div>

	</div>
</div>
              
            
!

CSS

              
                //vars
$color-pink: #F21DE4;
$color-pink-light: #DC56DB;
$color-blue: #3D79F2;
$color-blue-dark: #193073;
$color-cyan: #79F2F2;

//resets
html, body {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

h1 {
	margin: 0;
	padding: 0;

}

button {
	margin: 0;
	padding: 0;
	border: none;
	background-color: transparent;
	color: white;
	cursor: pointer;
}

i.fa-redo-alt {
	font-size: 1.5rem;
	margin-left: 1rem;
}


//styling
.toast {
	position: absolute;
	top: 0;
	right: 0;
	width: 200px;
	height: 50px;
	background-color: green;
	color: white;
	display: flex;
	justify-content: center;
	align-items: center;
	text-align:center;
	border-radius: 5px;
}

.container {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	min-height: 100vh;
	align-content: flex-start;
	background: $color-blue-dark;
	color: white;
}

.main {
	margin-top: 2rem;
	margin-bottom: 2rem;
	display: flex;
	flex-wrap: wrap;
	font-family: 'IBM Plex Sans', sans-serif;	
	background: #22293c;
	box-shadow: 8px 8px 10px 2px rgba(0,0,0,.3);
	border-radius: 5px;
	width: 700px;
	padding: 2rem;
	position: relative;
}

.title {
	flex: 0 1 100%;
	display: flex;
	align-items: center;
	justify-content: center;
	margin-top: 1rem;
	margin-bottom: 3rem;
	font-size: 1.5rem;
	text-transform: uppercase;
}

.graph {
	flex: 0 1 100%;
	display: flex;
	justify-content: center;
	align-items: flex-end;
	
	&__bars {
		display: flex;
		align-items: flex-end;
	}
	
	&__bar {
		background-color: $color-blue-dark;
		color: white;
		height: 20px;
		width: 50px;
		transition: transform .5s, opacity .1s;
		margin-right: 10px;
		display: flex;
		justify-content: center;
		align-items: flex-end;
		opacity: .5;
		position: relative;
		
		&.active {
			opacity: 1;
		}

		&.checking {
			opacity: 1;
		}

		&.complete {
			background-color: green !important;
			opacity: 1;
		}
	}
	
	&__randomize {
		color: red;
		& button {
			transition: opacity .1s;
			&:disabled {
				opacity: 0.5;
				cursor: initial;
			}
		}
	}
}

.bass {
	flex: 0 1 100%;
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	margin-top: 2rem;
	
	&__title {
		font-size: 1.3rem;
		flex: 0 1 100%;
		font-weight: bold;
		text-align: center;
		margin-bottom: 1rem;
	}
	
	&__notes {
		display: flex;
		flex: 0;
	}
	
	&__box {
		width: 20px;
		margin-left: 15px;
		height: 20px;
		background-color: $color-pink;
		opacity: .2;
		cursor: pointer;
		position: relative;
		
		&.active {
			opacity: .7;
		}
		
		& label {
			width: 100%;
			height: 100%;
			position: absolute;
			cursor: pointer;
		}
		
		& input {
			display: none;
		}
	}
	
	&__randomize {
		margin-left: 10px;
	}
}

.begin {
	flex: 0 1 100%;
	text-align: center;
	margin-top: 2rem;
	text-transform: uppercase;
	
	& button {
		background-color: $color-blue-dark;
		padding: 1rem 3rem;
		border-radius: 2px;
		font-weight: bold;
		font-size: 1.5rem;
		cursor: pointer;
		box-shadow: 2px 2px 5px rgba(0,0,0,0.2);
	}
}

.info-header {
	flex: 0 1 100%;
	margin-top: 1.5rem;
	margin-bottom: 1rem;
	text-align: center;
	font-weight: bold;
	font-size: 1.5rem;
}

.controls {
	flex: 0 1 100%;
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	margin-top: 2rem;
	background: lighten(#22293c, 10%);
	padding: 0 3.2rem;
	padding-right: 2rem;
	padding-bottom: 2rem;
	border-radius: 5px;
	position: relative;
	
	&__key {
		
		&-title {
			text-transform: uppercase;
			font-weight: bold;
			margin-bottom: 5px;
			text-decoration: underline;
		}
	}
	
	&__tempo {
		margin-top: 10px;
		display: flex;
		flex-wrap: wrap;
		
		&-title {
			flex: 0 1 100%;
			text-transform: uppercase;
			font-weight: bold;
			margin-bottom: 5px;
			text-decoration: underline;
		}
		
		& label {
			margin-left: 8px;
		}
	}
	
	&__seed {
		
		&-title {
			flex: 0 1 100%;
			text-transform: uppercase;
			font-weight: bold;
			margin-bottom: 10px;
			text-decoration: underline;
		}
		
		&-buttons {
			display: flex;
			margin-top: 10px;
			& button {
				background-color: $color-blue-dark;
				text-transform: uppercase;
				font-size: .9rem;
				padding: 5px 10px;
				margin-right: 10px;
				border-radius: 2px;
				box-shadow: 2px 2px 2px rgba(0,0,0,0.3);
			}
		}
	}
	
	&__data {
		flex: 0 1 50%;
	}
	
	&__saved-seeds {
		flex: 0 1 50%;
		
		&-title {
			flex: 0 1 100%;
			text-transform: uppercase;
			font-weight: bold;
			margin-bottom: 10px;
			text-decoration: underline;
		}
		
		&-seed {
			cursor: pointer;
		}
		
		& button {
				background-color: $color-blue-dark;
				text-transform: uppercase;
				font-size: .9rem;
				padding: 5px 10px;
				margin-right: 10px;
				border-radius: 2px;
				box-shadow: 2px 2px 2px rgba(0,0,0,0.3);
			}
	}
}

//debug

//vue transitions
.pop-down-enter-active, .pop-down-leave-active {
  transition: all .3s;
}
.pop-down-enter, .pop-down-leave-to /* .fade-leave-active below version 2.1.8 */ {
  opacity: 0;
	transform: translateY(-10px);
}

.list-complete-enter, .list-complete-leave-to
/* .list-complete-leave-active below version 2.1.8 */ {
  opacity: 0;
  transform: translateY(30px);
}

.list-complete-move {
	
}

.list-complete-leave-active {
  position: absolute;
}


              
            
!

JS

              
                //SEED GENERATOR: covert array to string, add together and then back to numbers

Vue.component('item', {
	props: ['num', 'music', 'modearray'],
	template: '<div>{{noteName}}</div>',
	data() {
		return {
			filter: new Tone.Filter(800, 'lowpass'),
			synth: null
		}
	},
	computed: {
		note() {
			if(this.num === 7) {
				return Tone.Frequency(this.music.key + '4');
			}
			return Tone.Frequency(this.music.key + '3').transpose(this.modearray[this.num]);
		},
		noteName() {
			return this.note.toNote();
		},
		height() {
			return `${30*(this.num+1)}px`;
		},
		color() {
			let startColor = [25, 48, 115];
			let endColor = [61, 121, 242];
			let finalColor = [];
			startColor.forEach((color, i)=>{
				let increment = (endColor[i]-color)/8;
				finalColor.push(color+(increment*this.num));
			});
			return `rgb(${finalColor[0]}, ${finalColor[1]}, ${finalColor[2]})`;
			
		}
	},
	methods: {
		triggerSynth(time) {
			this.synth.triggerAttackRelease(this.note, '8n', time);
		},
		schedule(iteration) {
			Tone.Transport.schedule(this.triggerSynth, iteration*Tone.Time('4n'));
		}
	},
	beforeMount() {
		this.synth = new Tone.Synth({
				oscillator: {
					type: 'square'
				}
			}).chain(this.filter, Tone.Master)
	},
	mounted() {
		this.$el.style.height = this.height;
		this.$el.style.backgroundColor = this.color;
		this.synth.volume.value = -10;
	}
})

let app = new Vue({
	el: "#app",
	data: {
		unsorted: chance.unique(chance.integer, 8, {min: 0, max: 7}),
		startArray: null,
		animation: {
			active: 0,
			checking: 0,
			anchor: 0,
			iteration: 0,
			finished: false,
			animating: false,
			delay: 500,
			interval: null,
			color: 'rgb(242,29,228)'
		},
		music: {
			key: 'C',
			mode: 'M',
			tempo: 120,
			bassPattern: [1,0,0,1,0,0,1,0,0,0,1,0,1,0,0,0],
			bass: new Tone.Synth({
				type: 'triangle'
			}).toMaster(),
			kick: new Tone.MembraneSynth().toMaster()
		},
		controls: true,
		toastMessage: 'Seed copied to clipboard!',
		toastActive: false,
		savedSeeds: {
			seeds: [],
			selected: null
		}
	},
	computed: {
		modeArray() {
			switch(this.music.mode) {
				case 'M':
					return [0,2,4,5,7,9,11];
					break;
				case 'm':
					return [0,2,3,5,7,8,10];
					break;
				case 'L':
					return [0,1,3,5,6,8,10];
					break;
			}
		},
		seedBassPattern() {
			let temp = [];
			for(let note of this.music.bassPattern) {
				if(note) {
					temp.push(1);
				} else {
					temp.push(0);
				}
			}
			return temp;
		},
		seed: {
			get: function() {
				let seed = '';
				for(let num of this.unsorted) {
					seed += `${num}`;
				}
				let bassPattern = this.seedBassPattern.join('');
				
				let stringTempo;
				if(this.music.tempo <= 9) {
					stringTempo = '00' + this.music.tempo;
				} else if(this.music.tempo <= 99) {
					stringTempo = '0' + this.music.tempo;	
				} else {
					stringTempo = this.music.tempo;				
				}
				
				
				seed += stringTempo;
				seed += bassPattern;
				seed += this.music.key;
				seed += this.music.mode;
				return seed;
			},
			set: function(newValue) {
				
			}
		}
	},
	watch: {
		'music.key': function(newVal, oldVal) {
			Tone.Transport.cancel();
			this.presort();
		},
		'music.mode': function(newVal, oldVal) {
			Tone.Transport.cancel();
			this.presort();
		},
		'music.tempo': function(newVal, oldVal) {
			Tone.Transport.bpm.value = newVal;
		}
	},
	methods: {
		triggerToast(type, message) {
			
			if(this.toastActive != true) {
				setTimeout(()=>{
					this.toastActive = false;
				}, 1000);
			}
			
			this.toastActive = true;

			switch (type) {
				case 'success':
					this.$refs.toast.style.backgroundColor = '#3D79F2';
					break;
				case 'failure':
					this.$refs.toast.style.backgroundColor = '#F21DE4';
					break;
			}
			
			this.toastMessage = message;	
		},
		selectSeedBox() {
			this.$refs.seed.select();
		},
		saveSeed() {
			let seed = this.$refs.seed.value;
			let invalid = false;
			
			for(let savedSeed of this.savedSeeds.seeds) {
				if(seed === savedSeed) {
					invalid = true;
				}
			}
			
			if(invalid) {
				this.triggerToast('failure', 'seed already in saved seeds!');
				return;
			}
			
			this.savedSeeds.seeds.push(seed);
			localStorage.setItem('seeds', JSON.stringify(this.savedSeeds.seeds));
		},
		clearSavedSeeds() {
			this.savedSeeds.seeds = [];
			localStorage.clear();
		},
		copySeed() {
			this.$refs.seed.select();
			document.execCommand('copy');
			this.triggerToast('success', 'Seed copied to clipboard!');
		},
		setSeed(value) {
			let invalid = false;
			let data = value.split('');
			
			let notes = data.splice(0,8);
			let tempo = data.splice(0,3);
			tempo = tempo.join('');
			let bassPattern = data.splice(0,16);
			let key = data[0];
			let mode = data[1];
			if(data[1] === '#') {
				key += data[1];
				mode = data[2];
			}
			
			
			notes.forEach((note, i)=>{
				notes[i] = parseInt(note);
				if(!(/[0-7]/.test(notes[i]))) {
					invalid = true;
					return;
				}
			});
			
			bassPattern.forEach((note, i)=>{
				bassPattern[i] = parseInt(note);
				if(!(/[0-1]/.test(bassPattern[i]))) {
					invalid = true;
					return;
				}
			});
			
			if(!(/[m,M,L]/.test(mode))) {
				invalid = true;
			}
			
			if(invalid) {
				this.triggerToast('failure', 'Invalid seed!');
				return;
			}
			
			this.unsorted = notes;
			this.music.key = key;
			this.music.mode = mode;
			this.music.tempo = tempo;
			this.music.bassPattern = bassPattern;
			this.presort();
		},
		handleSeedInput(e) {
			// console.log(e);
			if(e.code === "Enter") {
				e.preventDefault();
				this.setSeed(this.$refs.seed.value);
			}
		},
		//musical methods
		presort() {
			Tone.Transport.cancel();
			let arr = this.unsorted.slice(0);
			let iteration = 0;
			for(let i = arr.length; i>0; i--) {
				for(let j=0; j<i-1; j++) {
					if(arr[j] > arr[j+1]) {
						//schedule musical event
						this.$refs[arr[j+1]][0].schedule(iteration);
						//swap
						let temp = arr[j];
						arr[j] = arr[j+1];
						arr[j+1] = temp;
					}
					iteration++;
				}
			}
		},
		generateBassLoop(pattern, time) {
			let {bass, key} = this.music;
			for(let i=0; i<pattern.length; i++) {
				if(pattern[i]) {
					bass.triggerAttackRelease(`${key}2`, "8n", time + i*Tone.Time('16n'));
				}
			}
		},
		randomizeBassLoop() {
			let bp = this.music.bassPattern;
			for(let i=0; i<bp.length; i++) {
				Vue.set(this.music.bassPattern, i, chance.integer({min: 0, max: 1}));
			}
		},
		bassLoop() {
			let {bass, kick, key} = this.music;
			let animationCounter = 0;
			
			let loop = new Tone.Loop((time)=>{
				this.generateBassLoop(this.music.bassPattern, time);
				
				kick.triggerAttackRelease(`${key}1`, "8n", time);
				kick.triggerAttackRelease(`${key}1`, "8n", time + Tone.Time("4n"));
				kick.triggerAttackRelease(`${key}1`, "8n", time + 2*Tone.Time("4n"));
				kick.triggerAttackRelease(`${key}1`, "8n", time + 3*Tone.Time("4n"));
				
				animationCounter = 0;
			}, "1m");
			
			let animationLoop = new Tone.Loop((time)=>{
				animationCounter++;
				
				if(this.music.bassPattern[animationCounter-1]) {
					let activeBox = this.$refs.bass[animationCounter-1];

					function flashEnd() {
						TweenLite.to(activeBox, .1, {scale: 1});
					}

					TweenLite.to(activeBox, .05, {scale: 1.2, onComplete: flashEnd});
				}
				

				
			}, "16n");
			
			loop.start(0).stop('8m');
			animationLoop.start(0).stop('8m');
		},
		//styling methods
		arrayClass(i) {
			if(i>this.animation.anchor || this.animation.anchor == 0) {
				return 'complete';
			}
			
			switch(i) {
				case this.animation.active:
					return 'active';
					break;
				case this.animation.checking:
					return 'checking';
					break;
			}
		},
		//bubble sort methods
		randomize() {
			Tone.Transport.cancel();
			this.unsorted = chance.unique(chance.integer, 8, {min: 0, max: 7});
			this.presort();
		},
		firstPass() {
			this.animation.checking = this.animation.active+1;
			this.animation.anchor = (this.unsorted.length-1) - this.animation.iteration;
		},
		nextPass() {
			this.animation.active = 0;
			this.animation.checking = 1;
			this.animation.iteration++;
			this.animation.anchor--;
			
			if(this.animation.anchor === 0) {
				this.animation.finished = true;
				clearInterval(this.animation.interval);
			}
		},
		bubbleStep() {
			if(!this.animation.finished) {
				let arr = this.unsorted;
				let {active, checking, anchor} = this.animation;
				if(arr[active] > arr[checking]) {
					//animation
					let activeNote = this.$refs[arr[checking]][0].$el;
					let originalColor = this.$refs[checking][0].color;
					
					function flashFinish() {
						TweenLite.to(activeNote, .2, {backgroundColor: originalColor, zIndex: 0, delay: .2});
					}
					
					TweenLite.to(activeNote, .05, {backgroundColor: this.animation.color, zIndex: 100, onComplete: flashFinish});
					
					//swap
					let temp = arr[checking];
					arr[checking] = arr[active];
					arr[active] = temp;
				}

				this.animation.active++;
				this.animation.checking++;

				if(this.animation.checking === anchor+1) {
					this.nextPass();
				}
			}
		},
		beginSort() {
			if(this.controls) {
				this.animation.finished = false;
				this.startArray = this.unsorted.slice(0);
				this.controls = false;
				this.bassLoop();
				
				let loop = new Tone.Loop((time)=>{					
					Tone.Draw.schedule(()=>{
						this.bubbleStep();
					}, time);
				}, "4n");
				
				loop.start(0).stop('8m');
				Tone.Transport.toggle();
			} else {
				this.resetSort();
			}
		},
		resetSort() {
			Tone.Transport.toggle();
			Tone.Transport.cancel();
			this.unsorted = this.startArray;
			
			//reset animation back to original
			this.animation.active = 0;
			this.animation.checking = 1;
			this.animation.anchor = this.unsorted.length-1;
			this.animation.iteration = 0;
			
			this.presort();
			
			this.controls = true;
		}
	},
	beforeMount() {
		let seeds = JSON.parse(localStorage.getItem('seeds'));
		
		if(seeds) {
			this.savedSeeds.seeds = seeds;
		}
	},
	mounted() {
		this.firstPass();
		this.presort();
		this.music.kick.volume.value = -9;
	}
})
              
            
!
999px

Console