The samples for the kick drum come in different velocities. The first and second samples are high velocity (the kick is hit pretty hard) and the third less so. The simple, 6 quarter-beat pattern ends on sample 3, giving emphasis to the 1 immediately after it.
I have introduced some probabilism via chance. There is a diminished 0.7 (70%) chance that any one of the kick samples/sounds will be triggered, at any time. In effect, the kick pattern now constantly changes. Given the pattern is 6 quarter-beats, we have established a polymeter with the hat pattern from the last example. Polymeters and probabilities quickly create music that (re)creates itself.
<sequencer-blam bpm="90" id="transport">
<track-blam to="#hat">
<bar-blam s="1 0 2 0 ? ? ? 0"></bar-blam>
<bar-blam s="1 2 0 0 ? 0 ?"></bar-blam>
</track-blam>
<track-blam to="#kick" chance="0.7">
<bar-blam s="1 0 2 0 0 3"></bar-blam>
</track-blam>
</sequencer-blam>
Try listening for a short while to hear the ongoing changes in syncopation.