code: function chords (meter, data) {
    return measures(meter, data, function (dur, el) {
      return score.el({ duration: dur, chord: el })
    })
  }
docs: Create a chord names sequence
  
  @param {String} meter - the meter used in the measures
  @param {String} measures - the chords
  @param {Sequence} a sequence of chords
  
  @example
  score.chords('4/4', 'C6 | Dm7 G7 | Cmaj7')
  
  @example
  score(['chords', '4/4', 'Cmaj7 | Dm7 G7'])