Before listening to this disc, Carei Thomas was completely unknown to me, although this sixty-year-old African American composer/pianist has been creating wild free improvisational music in the Twin Cities for over 30 years. Perhaps that’s because apart from a few self-produced homemade cassettes, his music only just started to appear on commercially released CDs. “Ibidem,” from his new album on innova, synthesizes a variety of musical approaches: in only a few minutes it goes from a scorching violin-laptop duet to an almost Feldman-esque tranquility highlighted by Thomas’s spare piano phrasing.