code: function ttone1 (reps, row, key, beat, amp) {
    var tr = row.split(' ').map(function (n) {
      return +n + key
    })
    var r = score.repeat(reps, score.phrase(tr, beat, amp))
    return score.map(function (e) {
      return randDur(randOct(e), beat)
    }, null, r)
  }
docs: Metalevel, pg 124