text: /**
   * Constants used in player.
   */
  const Constants = {
  	VERSION: '2.0.5',
  	NOTES: [],
  	CIRCLE_OF_FOURTHS: ['C', 'F', 'Bb', 'Eb', 'Ab', 'Db', 'Gb', 'Cb', 'Fb', 'Bbb', 'Ebb', 'Abb'],
  	CIRCLE_OF_FIFTHS: ['C', 'G', 'D', 'A', 'E', 'B', 'F#', 'C#', 'G#', 'D#', 'A#', 'E#']
  };
  
  // Builds notes object for reference against binary values.
  const allNotes = [['C'], ['C#','Db'], ['D'], ['D#','Eb'], ['E'],['F'], ['F#','Gb'], ['G'], ['G#','Ab'], ['A'], ['A#','Bb'], ['B']];
  var counter = 0;
  
  // All available octaves.
  for (let i = -1; i <= 9; i++) {
  	allNotes.forEach(noteGroup => {
  		noteGroup.forEach(note => Constants.NOTES[counter] = note + i);
  		counter ++;
  	});
  }
  
  export {Constants};