Part two of our Meshuggah Lesson looks into Meshuggha’s use of Polymeter to create their brutal riffs and odd feels. I realized that before people can count more complex group based patterns we needed to focus on some basic counting as well as clarify the difference between polymeter, polyrhythms and what Meshuggah is exactly playing. The opening riff of Perpetual Black Second is a perfect example of their use of Polymeter (and in turn creating some sweet Rhythmic Displacement). The opening riff is in 7/8 (against 8/8) then switches to 9/8 (against 8/8). The riffs shifts back (and forward) in time against the repeated drum pattern causing Rhythmic Displacement ie the snare falls on different parts of the riff.
Special thanks to @MortenBoHansen for the suggestion!