“Underdocumented” is not an adjective that applies to pianist Matthew Shipp, who turned 60 last December. As an example, The Unidentifiable, a Fall 2020 release on ESP-Disk, is Shipp’s 14th date helming a piano-bass-drums trio since 1992, and his fourth with bassist Michael Bisio and drummer Newman Taylor Baker since 2015. Since that unit’s previous album...
