Few players are busier than the three that constitute Boneshaker. Saxophonist Mars Williams is cut in the mold of Nels Cline or Marc Ribot: When he’s not leading extemporaneous free music groups, he’s touring as a sideman for big pop acts. Last year, he toured for nearly five months with The Psychedelic Furs, the English new wave band he’s been a part of for nearly 30 years. Bassist Kent Kessler has his feet planted in the avant-garde scenes in Chicago (where he frequently collaborates with Ken Vandermark, Hamid Drake and Joe McPhee) and Europe (Mats Gustafsson, Misha Mengelberg, Peter Brötzmann). Drummer Paal Nilssen-Love is Norway’s Art Blakey, leading from behind the kit his Large Unit ensemble of rising Scandinavian jazz musicians when he’s not playing with any one of his seemingly innumerable combos. Moreover, there’s a matter of physical distance: Williams and Kessler are in Chicago, but Nilssen-Love, when he’s not globetrotting, splits his spare time between Norway and Portugal.