diff --git a/src/arpeggio.js b/src/arpeggio.js
index b115ca1..a465374 100644
--- a/src/arpeggio.js
+++ b/src/arpeggio.js
@@ -1,5 +1,5 @@
-import {chord as getChord} from './chords';
-import {PERFECT_OCTAVE} from './intervals';
+import { chord as getChord } from './chords';
+import { PERFECT_OCTAVE } from './intervals';
 
 const DIRECTION_DOWN = 'down';
 const DIRECTION_UP = 'up';
@@ -13,19 +13,19 @@ const DIRECTION_UP = 'up';
  *
  * @returns {array}
  */
-export function arpeggio(chord, length, direction) {
-	chord = getChord(chord);
-	if (direction === DIRECTION_DOWN) {
-		chord = chord.reverse();
-	}
-	let notes = [];
-	for (let i = 0; i < length; i++) {
-		let note = chord[i % chord.length];
-		let octave = Math.floor(i / chord.length) * PERFECT_OCTAVE;
-		if (direction === DIRECTION_DOWN) {
-			octave = -octave;
-		}
-		notes.push(note + octave);
-	}
-	return notes;
-}
+exports.arpeggio = (chord, length, direction) => {
+  chord = getChord(chord);
+  if (direction === DIRECTION_DOWN) {
+    chord = chord.reverse();
+  }
+  let notes = [];
+  for (let i = 0; i < length; i++) {
+    let note = chord[i % chord.length];
+    let octave = Math.floor(i / chord.length) * PERFECT_OCTAVE;
+    if (direction === DIRECTION_DOWN) {
+      octave = -octave;
+    }
+    notes.push(note + octave);
+  }
+  return notes;
+};
diff --git a/src/chords.js b/src/chords.js
index fe64eba..07e7703 100644
--- a/src/chords.js
+++ b/src/chords.js
@@ -1,6 +1,7 @@
+//prettier-ignore
 import {PERFECT_UNISON, MAJOR_THIRD, PERFECT_FIFTH, MINOR_THIRD,
 	AUGMENTED_FIFTH, DIMINISHED_FIFTH, PERFECT_OCTAVE} from './intervals';
-import {note} from './notes';
+import { note } from './notes';
 
 /* Chord qualities */
 const MAJOR_TRIAD = [PERFECT_UNISON, MAJOR_THIRD, PERFECT_FIFTH];
@@ -11,27 +12,26 @@ const DIMINISHED_TRIAD = [PERFECT_UNISON, MINOR_THIRD, DIMINISHED_FIFTH];
 /* Chord inversions */
 const ROOT_POSITION = [PERFECT_UNISON, PERFECT_UNISON, PERFECT_UNISON];
 const FIRST_INVERSION = [PERFECT_OCTAVE, PERFECT_UNISON, PERFECT_UNISON];
-const SECOND_INVERSION = [PERFECT_OCTAVE, PERFECT_OCTAVE,
-	PERFECT_UNISON];
+const SECOND_INVERSION = [PERFECT_OCTAVE, PERFECT_OCTAVE, PERFECT_UNISON];
 
 const CHORD_REGEX = /^([cdefgab])#?([0-9]|)(M|m|maj|min|dim|aug|)$/i;
 
 const DEFAULT_OCTAVE = 4;
 
 var Qualities = {
-	''    : MAJOR_TRIAD,
-	'M'   : MAJOR_TRIAD,
-	'maj' : MAJOR_TRIAD,
-	'm'   : MINOR_TRIAD,
-	'min' : MINOR_TRIAD,
-	'dim' : DIMINISHED_TRIAD,
-	'aug' : AUGMENTED_TRIAD
+  '': MAJOR_TRIAD,
+  M: MAJOR_TRIAD,
+  maj: MAJOR_TRIAD,
+  m: MINOR_TRIAD,
+  min: MINOR_TRIAD,
+  dim: DIMINISHED_TRIAD,
+  aug: AUGMENTED_TRIAD,
 };
 
 var Inversions = {
-	0 : ROOT_POSITION,
-	1 : FIRST_INVERSION,
-	2 : SECOND_INVERSION
+  0: ROOT_POSITION,
+  1: FIRST_INVERSION,
+  2: SECOND_INVERSION,
 };
 
 /**
@@ -42,29 +42,29 @@ var Inversions = {
  *
  * @returns {array}    Chord
  */
-export function chord(chord, inversion = 0) {
-	if (Array.isArray(chord)) {
-		return chord;
-	}
+exports.chord = (chord, inversion = 0) => {
+  if (Array.isArray(chord)) {
+    return chord;
+  }
 
-	let chordNotes = [];
-	let [, root, octave, quality] = chord.match(CHORD_REGEX);
+  let chordNotes = [];
+  let [, root, octave, quality] = chord.match(CHORD_REGEX);
 
-	if (octave === '') {
-		octave = DEFAULT_OCTAVE;
-	}
+  if (octave === '') {
+    octave = DEFAULT_OCTAVE;
+  }
 
-	root = note(root + octave);
-	quality = Qualities[quality];
-	inversion = Inversions[inversion];
+  root = note(root + octave);
+  quality = Qualities[quality];
+  inversion = Inversions[inversion];
 
-	quality.forEach(function(value, index) {
-		chordNotes.push(value + root + inversion[index]);
-	});
+  quality.forEach(function (value, index) {
+    chordNotes.push(value + root + inversion[index]);
+  });
 
-	return chordNotes;
+  return chordNotes;
 };
 
-export function registerChord(quality, intervals) {
-	Qualities[quality] = intervals;
-}
+exports.registerChord = (quality, intervals) => {
+  Qualities[quality] = intervals;
+};
diff --git a/src/notes.js b/src/notes.js
index 6c6a8fb..ed89735 100644
--- a/src/notes.js
+++ b/src/notes.js
@@ -1,3 +1,4 @@
+// prettier-ignore
 const NOTES = {
 	'C0' : 0, 'C#0' : 1, 'D0' : 2, 'D#0' : 3, 'E0' : 4, 'F0' : 5, 'F#0' : 6,
 	'G0' : 7, 'G#0' : 8, 'A0' : 9, 'A#0' : 10, 'B0' : 11, 'C1' : 12, 'C#1' : 13,
@@ -23,10 +24,10 @@ const NOTES = {
 	'G10' : 127,
 };
 
-export function note(noteString) {
-	if (typeof noteString === 'number') {
-		return noteString;
-	}
-	noteString = noteString.toUpperCase();
-	return NOTES[noteString];
-}
+exports.note = (noteString) => {
+  if (typeof noteString === 'number') {
+    return noteString;
+  }
+  noteString = noteString.toUpperCase();
+  return NOTES[noteString];
+};
diff --git a/src/scales.js b/src/scales.js
index e29308f..c63459f 100644
--- a/src/scales.js
+++ b/src/scales.js
@@ -1,8 +1,20 @@
-import {TONE, SEMITONE, PERFECT_OCTAVE} from './intervals';
-import {note as getNote} from './notes';
+import { TONE, SEMITONE, PERFECT_OCTAVE } from './intervals';
+import { note as getNote } from './notes';
 
-const CHROMATIC_SCALE = [SEMITONE, SEMITONE, SEMITONE, SEMITONE, SEMITONE,
-	SEMITONE, SEMITONE, SEMITONE, SEMITONE, SEMITONE, SEMITONE, SEMITONE];
+const CHROMATIC_SCALE = [
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+  SEMITONE,
+];
 const WHOLE_TONE_SCALE = [TONE, TONE, TONE, TONE, TONE, TONE, TONE];
 
 const IONIAN_MODE = [TONE, TONE, SEMITONE, TONE, TONE, TONE, SEMITONE];
@@ -14,28 +26,28 @@ const AEOLIAN_MODE = [TONE, SEMITONE, TONE, TONE, SEMITONE, TONE, TONE];
 const LOCRIAN_MODE = [SEMITONE, TONE, TONE, SEMITONE, TONE, TONE, TONE];
 
 var Scales = {
-	ionian     : IONIAN_MODE,
-	dorian     : DORIAN_MODE,
-	phrygian   : PHRYGIAN_MODE,
-	lydian     : LYDIAN_MODE,
-	mixolydian : MIXOLYDIAN_MODE,
-	aeolian    : AEOLIAN_MODE,
-	locrian    : LOCRIAN_MODE,
-	major      : IONIAN_MODE,
-	minor      : AEOLIAN_MODE
+  ionian: IONIAN_MODE,
+  dorian: DORIAN_MODE,
+  phrygian: PHRYGIAN_MODE,
+  lydian: LYDIAN_MODE,
+  mixolydian: MIXOLYDIAN_MODE,
+  aeolian: AEOLIAN_MODE,
+  locrian: LOCRIAN_MODE,
+  major: IONIAN_MODE,
+  minor: AEOLIAN_MODE,
 };
 
-export function scale(root, scale, length) {
-	scale = Scales[scale];
-	let notes = [];
-	let note = getNote(root);
-	for (let i = 0; i < length; i++) {
-		note = note + scale[i % scale.length];
-		notes.push(note);
-	}
-	return notes;
-}
+exports.scale = (root, scale, length) => {
+  scale = Scales[scale];
+  let notes = [];
+  let note = getNote(root);
+  for (let i = 0; i < length; i++) {
+    note = note + scale[i % scale.length];
+    notes.push(note);
+  }
+  return notes;
+};
 
-export function registerScale(name, scale) {
-	Scales[name] = scale;
-}
+exports.registerScale = (name, scale) => {
+  Scales[name] = scale;
+};