def flat.bands
import emerging-ezaudio@0.4.0.0/src/mp3_enc.bend as Mp3Encimport Base
929def flat.bands(xs: List<&2, List<&2, F32>>) -> List<&2, F32>:
930 match xs:
931 case Nil{}:
932 []
933 case +hd <> tl:
934 List.append(&2, F32, hd, flat.bands(tl))