In the early '70s, Barry Altschul was the drummer for Circle -- a band that (with a membership that also included Chick Corea, Dave Holland, and Anthony Braxton) might possibly have been the most technically adept free jazz ensemble ever. Altschul's drumming with that band was stylistically all-encompassing -- in his own words, "from ragtime to no time" -- thanks to his background in traditional jazz styles, which gave him a solid grounding on which to build his free playing. From his days with Circle to his more recent work as a leader of his own ensembles and collaborator wi...