Transcribing this challenging song was a bit of a nightmare with its virtual obstacle course of changing time signatures. The 15/8 verse drum groove is based on a hemiola (3:2 polyrhythm). It has a steady rim-click pulse on the eighth-notes with a dotted quarter-note bass drum pattern underneath; the sixteenths Cameron plays on the hi-hat serve to glue everything together. From here it gets trickier, with shifting bars of 3/4, 4/4, and 21/16 before returning to the comparatively simpler 15/8 groove. If you space the sixteenth-notes evenly while attempting this, you should emerge unscathed.
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