var a = s("mt [ht lt] <mt [~ mt] mt> misc:1")
  .off ("<0.25 0.125>", x => x.n(2).speed(2))
  .fast("<2 3@2>")
  .bank("ViscoSpaceDrum")
  .slow(4)

var b = s("[clap:2 ~ clap:6]*2").speed(1.4)

stack(a,b)