Your first cycle

The 12-pulse cycle

Almost every traditional Gnawa piece sits on a cycle of 4 beats × 12 sub-pulses. The krakeb (the iron castanets) keeps that pulse going steadily, and the guembri plays a bass line that lands on the strong beats. The interplay between the two — three-against-two, four-against-six — is the engine that drives the trance.

For your first cycle we’re going to leave the krakeb to do its own thing and focus on landing your bass cleanly on the four beats — the four ember dots in the ring above.

The exercise

Pluck the open low D string (string 1) once on every beat. Hold it. Let it ring through to the next beat. Don’t fret the string — just the open low drone, four times per cycle.

• On this very first exercise, accent beats 1 and 3 to help you feel the cycle land. (Real Gnawa accent patterns are richer than that — Sum 2012 documents a two-half oum structure where the second half builds intensity — but we’ll come back to that.)
• Beats 2 and 4 are softer.
• The krakeb hits every sub-pulse underneath; you don’t need to play that — just feel it.

Play along

Press play. Watch the green playhead sweep across the cycle. Try to pluck your guembri on each beat (the bigger orange notes). Slow the tempo down with the slider if it’s too fast — start at 50% and work up to 100%. Mute the krakeb if you want silence under your own playing.

Loop it for a full minute before moving on. The point isn’t to play four notes — it’s to feel four beats inside a twelve-pulse cycle.

When this feels easy

You’re ready for variation. The natural next move is to add notes between the beats — say, a softer pluck on beat 1.5 and 3.5 — or to move to a fretted position on beat 3 to outline a melodic shape. Each named piece in the repertoire builds on this same 12-pulse foundation.

More lessons coming soon. In the meantime, browse the Patterns library to hear longer demos at different difficulties, or the Repertoire for named pieces of the canon.