diff --git a/app.ts b/app.ts
index 4cd4655..9aba773 100644
--- a/app.ts
+++ b/app.ts
@@ -17,8 +17,9 @@ export const audioTest = () => {
 }
 
 // allows a chord to be generated with input from another function
-export const soundChord = (pitches: string[]) => {
-    const [s,a,t,b] = pitches;
+// pitchNames: array of strings
+export const soundChord = (pitchNames) => {
+    const [s,a,t,b] = pitchNames;
     soprano.triggerAttackRelease(s, "8n");
     alto.triggerAttackRelease(a, "8n");
     tenor.triggerAttackRelease(t, "8n");
@@ -28,7 +29,6 @@ export const soundChord = (pitches: string[]) => {
 // set up transport
 const transportStart = document.getElementById('transport-start');
 
-// @ts-expect-error
 const loop = new Tone.Loop((time) => {
     audioTest();
 }, "8n").start(0);
diff --git a/index.html b/index.html
index 931ca61..09e22de 100644
--- a/index.html
+++ b/index.html
@@ -119,13 +119,10 @@
         <!-- Tone.js library -->
         <script type="module" src="https://unpkg.com/tone@14.7.77/build/Tone.js"></script>
         <!-- internal scripts -->
-        <script type="module" src="./built/app.js"></script>
-        <script type="module" src="./built/src/audioUtils.js"></script>
-        <script type="module" src="./built/src/harmonyUtil.js"></script>
-        <script type="module" src="./built/src/inputHandling.js"></script>
-        <script type="module" src="./built/src/styleUtils.js"></script>
-        <script type="module" src="./built/src/vector_logic/evaluateVector.js"></script>
-        <script type="module" src="./built/src/vector_logic/extractPitchset.js"></script>
-        <script type="module" src="./built/src/vector_logic/findVector.js"></script>
+        <script type="module" src="./src/styleUtils.js"></script>
+        <script type="module" src="./src/inputHandling.js"></script>
+        <script type="module" src="./src/harmonyUtil.js"></script>
+        <script type="module" src="./src/audioUtil.js"></script>
+        <script type="module" src="./app.js"></script>
     </body>
 </html>
\ No newline at end of file
diff --git a/src/audioUtil.js b/src/audioUtil.js
new file mode 100644
index 0000000..39c74c4
--- /dev/null
+++ b/src/audioUtil.js
@@ -0,0 +1,21 @@
+import { soundChord } from "../app.js";
+import { getRandomPitches } from "./vector_logic/getRandomPitches.js";
+import { extractPitchset } from "./vector_logic/extractPitchset.js";
+import { getProceduralPitches } from "./vector_logic/getProceduralPitches.js";
+
+// initial test: generate a single, random chord
+export const fullRandomChord = () => {
+    let pitches = getRandomPitches();
+    soundChord(pitches);
+    let pitchset = extractPitchset(pitches);
+
+    return pitchset;
+}
+
+export const evaluatedChord = (prevPitches = ["C3", "G3", "C4", "G4"]) => {
+    let pitches = getProceduralPitches(prevPitches);
+    soundChord(pitches);
+    let pitchset = extractPitchset(pitches);
+
+    return pitchset;
+}
\ No newline at end of file
diff --git a/src/harmonyUtil.js b/src/harmonyUtil.js
new file mode 100644
index 0000000..696320b
--- /dev/null
+++ b/src/harmonyUtil.js
@@ -0,0 +1,27 @@
+export const sopranoTones = ["B5", "A5", "G5", "F#5", "F5", "E5", "D5", "C5", "B4", "Bb4", "A4", "G4", "F#4", "F4", "E4"];
+export const altoTones = ["E5", "D5", "C5", "B4", "Bb4", "A4", "G4", "F#4", "F4", "E4", "D4", "C4", "B3", "Bb3", "A3", "G3"];
+export const tenorTones = ["G4", "F#4", "F4", "E4", "D4", "C4", "B3", "Bb3", "A3", "G3", "F3", "E3", "D3", "C3"];
+export const bassTones = ["C2", "D2", "E2", "F2", "G2", "A2", "Bb2", "B2", "C3", "D3", "E3", "F3", "G3"];
+
+export const pitchsets = [bassTones, tenorTones, altoTones, sopranoTones];
+
+export const musicalPitches = ['A', "Bb", "B", "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#"];
+
+// interval definitions:
+export const intervalNames = {
+    0: "unison",
+    1: "minor second",
+    2: "major second",
+    3: "minor third",
+    4: "major third",
+    5: "perfect fourth",
+    6: "tritone"
+    // all intervals beyond this invert to one of the previous intervals
+}
+
+// helper functions
+const transposePitches = (pitchNames, interval) => {
+    let transposed = [];
+    pitchNames.forEach(pitch => transposed.push((pitch + interval) % 12));
+    return transposed;
+}
diff --git a/src/harmonyUtil.ts b/src/harmonyUtil.ts
deleted file mode 100644
index 1642599..0000000
--- a/src/harmonyUtil.ts
+++ /dev/null
@@ -1,70 +0,0 @@
-// pitchset definitions, grouped into matrix before export
-const sopranoTones = ["B5", "A5", "G5", "F#5", "F5", "E5", "D5", "C5", "B4", "Bb4", "A4", "G4", "F#4", "F4", "E4"];
-const altoTones = ["E5", "D5", "C5", "B4", "Bb4", "A4", "G4", "F#4", "F4", "E4", "D4", "C4", "B3", "Bb3", "A3", "G3"];
-const tenorTones = ["G4", "F#4", "F4", "E4", "D4", "C4", "B3", "Bb3", "A3", "G3", "F3", "E3", "D3", "C3"];
-const bassTones = ["C2", "D2", "E2", "F2", "G2", "A2", "Bb2", "B2", "C3", "D3", "E3", "F3", "G3"];
-
-export const pitchsets: string[][] = [sopranoTones, altoTones, tenorTones, bassTones];
-
-// mapping of musical pitches, refer to this by index, maps onto base 12
-export const musicalPitches = ['A', "Bb", "B", "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#"];
-
-// interval definitions:
-export interface IntervalDef {
-    number: string
-}
-
-export const IntervalDefNames = {
-    0: "unison",
-    1: "minor second",
-    2: "major second",
-    3: "minor third",
-    4: "major third",
-    5: "perfect fourth",
-    6: "tritone"
-    // ... all intervals beyond this invert to one of the previous intervals
-}
-
-// helper functions
-const transposePitches = (pitches: number[], interval: number) => {
-    let transposed = [];
-    pitches.forEach(pitch => transposed.push((pitch + interval) % 12));
-    return transposed;
-}
-
-// quality-of-life tool for debugging
-export const labelIntervals = (vector: number[]): [number, IntervalDef][] => {
-    let result: [number, IntervalDef][] = [];
-
-    for (let x of vector) {
-        result.push([x, IntervalDefNames[x]]);
-    }
-
-    return result;
-}
-
-// iterates through each voice's pitchset, and selects a random pitch from each
-export const getRandomPitches = (): string[] => {
-    let pitches: string[];
-    for (let voice of pitchsets) {
-        // will store a random index
-        let index: number;
-
-        const regex = /[0-9]/g;
-        
-        // repeat this iteration until it returns a number not already included in the list
-        do {
-            if (!pitches) pitches = [];
-
-            index = Math.floor(Math.random() * 100) % voice.length;
-
-            console.log(`${voice[0]}: ${index}`);
-        } while (pitches.includes(voice[index]));
-
-        // if pitches is not already initialized to an empty array, do so; otherwise, push the received value
-        pitches ? pitches.push(voice[index]) : pitches = [voice[index]];
-        console.log(voice[index]);
-    }
-
-    return pitches;
-}
diff --git a/src/inputHandling.ts b/src/inputHandling.js
similarity index 94%
rename from src/inputHandling.ts
rename to src/inputHandling.js
index 0aa4e7c..487879a 100644
--- a/src/inputHandling.ts
+++ b/src/inputHandling.js
@@ -1,5 +1,9 @@
 import { audioTest } from '../app.js';
+<<<<<<< HEAD:src/inputHandling.ts
 import { evaluatedChord, fullRandomChord } from './audioUtils.js';
+=======
+import { fullRandomChord, evaluatedChord } from './audioUtil.js';
+>>>>>>> backtrack:src/inputHandling.js
 
 // slider variables referring to DOM
 export const sopranoVol = document.getElementById('soprano-vol');
diff --git a/src/styleUtils.js b/src/styleUtils.js
new file mode 100644
index 0000000..7f47476
--- /dev/null
+++ b/src/styleUtils.js
@@ -0,0 +1,41 @@
+export const startButton = document.getElementById("start-tone");
+export const synthButton = document.getElementById("synth-button");
+
+export const showStart = document.getElementsByClassName('show-on-start') as HTMLCollectionOf<HTMLElement>;
+export const hideStart = document.getElementsByClassName('hide-on-start') as HTMLCollectionOf<HTMLElement>;
+
+export const showMore = document.getElementById('info-button');
+export const moreInfo = document.getElementsByClassName('more-info') as HTMLCollectionOf<HTMLElement>;
+
+export let appReady = false;
+
+showMore.onclick = () => {
+    if (showMore.innerHTML === 'Show more info...') {
+        for (let element of moreInfo) {
+            element.style.display = 'block';
+            document.querySelector('#info-button').innerHTML = "Hide info";
+        }
+    } else if (showMore.innerHTML === 'Hide info') {
+        for (let element of moreInfo) {
+            element.style.display = 'none';
+            document.querySelector('#info-button').innerHTML = "Show more info...";
+        }
+    }
+}
+
+startButton.onclick = async () => {
+    // @ts-expect-error - namespace again, failed import from Tone
+    await Tone.start()
+    .then(() => {
+        appReady = true;
+        synthButton.style.display = "block";
+        startButton.style.display = "none";
+
+        for (let element of showStart) {
+            element.style.display = "flex";
+        }
+        for (let element of hideStart) {
+            element.style.display = "none";
+        }
+    });
+}
diff --git a/src/vector_logic/evaluateVector.js b/src/vector_logic/evaluateVector.js
new file mode 100644
index 0000000..db32ff6
--- /dev/null
+++ b/src/vector_logic/evaluateVector.js
@@ -0,0 +1,21 @@
+import { getRandomPitches } from './getRandomPitches.js';
+import { extractPitchset } from "./extractPitchset.js";
+import { findVector } from "./findVector.js";
+
+export const evaluateVector = (vector) => {
+    return ((vector.includes(1) || vector.includes(6)));
+}
+
+export const rejectDissonance = (pitchset) => {
+    const vector = findVector(pitchset);
+
+    // returns the pitchset and its vector if evaluateVector returns true,
+    if (evaluateVector(vector)) return vector;
+
+    // and recursively calls the function otherwise.
+    if (!evaluateVector(vector)) {
+        let newPitches = getRandomPitches();
+        let newPitchset = extractPitchset(newPitches);
+        rejectDissonance(newPitchset);
+    };
+}
\ No newline at end of file
diff --git a/src/vector_logic/extractPitchName.js b/src/vector_logic/extractPitchName.js
new file mode 100644
index 0000000..016d63a
--- /dev/null
+++ b/src/vector_logic/extractPitchName.js
@@ -0,0 +1,2 @@
+const regex = /[A-Gb#]/g;
+export const extractPitchName = (tonePitchName) => tonePitchName.match(regex).join('');
diff --git a/src/vector_logic/extractPitchset.js b/src/vector_logic/extractPitchset.js
new file mode 100644
index 0000000..62c9b1e
--- /dev/null
+++ b/src/vector_logic/extractPitchset.js
@@ -0,0 +1,22 @@
+import { musicalPitches } from '../harmonyUtil.js';
+import { extractPitchName } from './extractPitchName.js';
+
+// converts pitches in Tone.js string format to base-12 number pitchsets
+export const extractPitchset = (pitches) => {
+    // 1) determine pitch set from given array of pitches
+    let pitchset = [];
+
+    for (let each of pitches) {
+        // filters numbers from above tones
+        const str = each;
+        const withoutNums = extractPitchName(str);
+        const pitchNumber = musicalPitches.indexOf(withoutNums);
+
+        // ... so that they may be mapped onto numbers corresponding to the chromatic scale
+        pitchset.push(pitchNumber);
+    }
+
+    // these are sorted from lowest to highest index (something like an interval vector)
+    pitchset.sort((a,b) => a < b);
+    return pitchset;
+}
\ No newline at end of file
diff --git a/src/vector_logic/findVector.js b/src/vector_logic/findVector.js
new file mode 100644
index 0000000..2457b00
--- /dev/null
+++ b/src/vector_logic/findVector.js
@@ -0,0 +1,26 @@
+// takes pitches as numbers and converts them to a vector
+export const findVector = (pitches) => {
+    let sorted = pitches.sort((x,y) => x - y);
+
+    // finds each interval and logs it as a duple
+    let intervalClasses = [];
+    for (let i = 0; i < sorted.length; i++) {
+        let j = i+1;
+
+        // does not allow out of range values in the proceeding loop
+        if (j >= sorted.length) {
+            break;
+        }
+
+        do {
+            let thing = (sorted[j] - sorted[i]) % 6
+            if (!(intervalClasses.includes(thing))) {
+                intervalClasses.push(thing);
+            }
+            j++;
+        } while (j < sorted.length);
+    }
+
+    intervalClasses = intervalClasses.sort((x,y) => x-y);
+    return intervalClasses;
+}
diff --git a/src/vector_logic/getProceduralPitches.js b/src/vector_logic/getProceduralPitches.js
new file mode 100644
index 0000000..bd9c5e6
--- /dev/null
+++ b/src/vector_logic/getProceduralPitches.js
@@ -0,0 +1,54 @@
+import { pitchsets, musicalPitches } from "../harmonyUtil.js";
+import { extractPitchName } from "./extractPitchName.js";
+import { getRandomIndex } from "./getRandomPitches.js";
+
+// an additional method based on the structure of getRandomPitches,
+// but taking some principles of music theory into account.
+export const getProceduralPitches = (prevPitches) => {
+    // prevPitches is passed in to ensure there is no linear dissonance within voices
+    let pitches = [];
+    let formattedPitches = [];
+    
+    for (let voice of pitchsets) {
+        let index;
+        let formattedPitch;
+        
+        while (pitches.length <= pitchsets.indexOf(voice)) {
+            // the first section of this while loop is more free.
+            index = getRandomIndex(voice);
+            formattedPitch = extractPitchName(voice[index]);
+
+            // this initial condition will apply only to the bass voice,
+            if (!pitches.length) {
+                pitches.push(voice[index]);
+            } else {
+                // now we need some repeating logic for the remaining four voices
+                while (pitches.length !== (pitchsets.indexOf(voice) + 1)) {
+                    index = getRandomIndex(voice);
+                    pitches.push(voice[index]);
+
+                    
+                    for (let i = 0; i < pitches.length; i++) {
+                        let numVals = [];
+
+                        for (let j = i; j < i + 2; j++) {
+                            console.log(pitches[j]);
+                            let extracted = extractPitchName(pitches[j]);
+                            numVals.push(musicalPitches.indexOf(extracted) + 1);
+                        }
+
+                        let difference = Math.abs(numVals.reduce((x,y) => x - y));
+                        if (difference === 1 || difference === 6) {
+                            pitches.pop();
+                        } else {
+                            continue;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    console.log(pitches);
+    return pitches;
+}
diff --git a/src/vector_logic/getRandomPitches.js b/src/vector_logic/getRandomPitches.js
new file mode 100644
index 0000000..fb31de6
--- /dev/null
+++ b/src/vector_logic/getRandomPitches.js
@@ -0,0 +1,32 @@
+import { pitchsets } from "../harmonyUtil.js";
+import { extractPitchName } from "./extractPitchName.js";
+
+// helper function for assigning a random index for a given voice's pitchset
+export const getRandomIndex = (voice) => Math.floor(Math.random() * 100) % voice.length;
+
+export const getRandomPitches = () => {
+    // pitches stored in Tone.js string format
+    let pitches = [];
+    let formattedPitches = [];
+    
+    for (let voice of pitchsets) {
+        // finds a random index, excluding any which may already exist in the array
+        let index;
+        let formattedPitch;
+
+        // loops until four distinct chord members are received
+        while (formattedPitches.length <= pitchsets.indexOf(voice)) {
+            index = getRandomIndex(voice);
+
+            formattedPitch = extractPitchName(voice[index]);
+            if (!formattedPitches.includes(formattedPitch)) {
+                formattedPitches.push(formattedPitch);
+                pitches.push(voice[index]);
+            }
+        }
+    }
+
+    console.log(formattedPitches);
+    console.log(pitches);
+    return pitches;
+}
diff --git a/src/vector_logic/helper.js b/src/vector_logic/helper.js
new file mode 100644
index 0000000..77fd2d9
--- /dev/null
+++ b/src/vector_logic/helper.js
@@ -0,0 +1,80 @@
+import { pitchsets, musicalPitches } from '../harmonyUtil.js';
+import { extractPitchName } from './extractPitchName.js';
+import { getRandomIndex } from './getRandomPitches.js';
+
+const iteratePitchsets = () => {
+    let pitches = [];
+    let result = [];
+
+    const tryNewPitch = () => {
+        result = [];
+
+        for (let voice of pitchsets) {
+            let idx = getRandomIndex(voice);
+            let pitchNum = musicalPitches.indexOf(extractPitchName(voice[idx]));
+    
+            pitches.push([pitchNum, voice[idx]]);
+        }
+
+        console.log(pitches);
+
+        for (let i = 0; i < pitches.length; i++) {
+            for (let j = i; j < pitches.length; j++) {
+                let difference = Math.abs(pitches[i][0] - pitches[j][0]);
+                if (difference === 1 || difference === 6) {
+                    result.push(["BAD", [i, j], pitches[i], pitches[j]]);
+                } else {
+                    result.push(["GOOD", [i, j], pitches[i], pitches[j]]);
+                }
+            }
+        }
+        console.log(result);
+    }
+
+    tryNewPitch();
+
+    for (let entry in result) {
+        if (entry[0] === "BAD") {
+            iteratePitchsets();
+        }
+    }
+
+    console.log(pitches);
+}
+
+iteratePitchsets();
+
+
+
+function twoPointIteration() {
+    let caught = false;
+    let data = [1,2,3,4,5,6];
+
+    for (let i = 0; i < data.length; i++) {
+        console.log(data[i]);
+        for (let j = 0; j < data.length; j++) {
+            if (data[i] === data[j]) continue;
+
+            let difference = Math.abs(data[j] - data[i]);
+
+            if (difference === 3) {
+                difference = "caught: 3";
+            }
+
+            console.log([difference, [data[i], data[j]]]);
+        }
+
+        console.log('next');
+    }
+
+    return caught;
+}
+
+function selfReferentialPointer() {
+    for (let i = 0; i < 5; i++) {
+        console.log(`i: ${i}`);
+        for (let j = i; j < i+2; j++) {
+            console.log(`jjjjjjj: ${j % 3}`);
+        }
+    }
+}
diff --git a/src/vector_logic/numbersToPitches.js b/src/vector_logic/numbersToPitches.js
new file mode 100644
index 0000000..e69de29