Curly-brace patterns in Strudel combine sequences of different step counts polymetrically

In Strudel mininotation, {} combines multiple comma-separated sequences that have different numbers of elements. Unlike [] which subdivides one step, {} lets each sequence run at its own native density. The result is polymetric: the sequences cycle against each other, creating rhythmic variation that evolves over multiple cycles. This deliberately creates phasing-like patterns from the mismatch between different step lengths.

Examples

sound(“{bd bd/1 bd/2 bd/3, ~ ~ hh [~ cp] hh*3}”) — the kick sequence and the hi-hat/clap sequence have different step counts and cycle against each other.

Assessment

Create a {} pattern with two sequences of different lengths and listen for how the pattern changes across 4+ cycles. Describe what happens at the phase boundary.