(arranger
  (track
    (name "Drums")
    (phrase
      (name "4 kicks")
      (beats 4)
      (steps 16)
      (:00 (36 128))
      (:04 (36 100))
      (:08 (36 100))
      (:12 (36 100))))
  (track
    (name "Bass")
    (phrase
      (beats 4)
      (steps 16)
      (:04 (36 100))
      (:12 (36 100)))))