def step.tag
import emerging-ezaudio@0.4.0.0/src/wav.bend as Wavimport Base
256def step.tag(st: St, +hd: U32) -> St:
257 match st:
258 case St{_ph, +left, _tg, sz, seen, kind, ch, rate, acc, frames}:
259 step.tag.at(U32.is_eq(left, 1), left, sz, seen, kind, ch, rate, hd <> acc, frames)