//experiment with this duration
//sound “grains” are typically 10-100 ms
var grainMS = 250 

a = Drums('x*ox*xo-')

b = Sampler()

pickNew = function()
{
  a.amp = 1
  b.record(a, ms(grainMS))
  future(function(){
    a.amp = 0
    b.note.seq( [0.5, 1, 2, 4].random(), ms(grainMS) )
  }, ms(grainMS))
  
}

s = Seq(pickNew, ms(500))