Oddments

Double drumming is a performance-centric rock approach where two full drum kits (and often additional percussion) play simultaneously to create a wider, denser, and more polyrhythmic groove. It emphasizes interlocking parts, call-and-response figures, and dynamic layering—one drummer typically anchors the backbeat while the other colors the groove with accents, ghost notes, tom patterns, or counter-rhythms. The sound is often mixed in stereo with each kit panned left/right, producing an enveloping live feel closely associated with jam-oriented rock, Southern rock, psychedelic rock, post-punk, and experimental scenes.

Microtonal music is any music that uses pitch intervals smaller than the 12-tone equal-tempered semitone or uses alternative tunings that divide the octave into a different number of steps. Rather than being bound to 12 equal notes per octave, microtonal composers and performers work with just intonation (pure, whole-number ratios), equal divisions of the octave such as 19-EDO, 24-EDO, 31-EDO, or 53-EDO, and non-octave or non-equal systems. While many non-Western traditions historically employ intervals that do not fit 12‑TET (e.g., Arabic maqām, Turkish makam, Persian dastgāh, Indian raga, and Indonesian gamelan), the term “microtonal” in a modern sense usually refers to the deliberate exploration of these and other tunings in contemporary composition, experimental classical, rock/metal, and electronic music. The focus is on expanding consonance/dissonance palettes, unlocking new chordal colors, and discovering novel melodic gestures that 12‑TET obscures.