Expanding the rhythmically exuberant Natural Information Society led by Chicago bassist & guimbri player Joshua Abrams with core members Lisa Alvarado (harmonium), Mikel Patrick Avery (drums) & Jason Stein (bass clarinet), are Hamid Drake (percussion), Josh Berman & Ben Lamar Gay (cornets), Nick Mazzarella & Mai Sugimoto (alto sax & flute), Kara Bershad (harp) and Ari Brown (sax).

This year's An Ayler Xmas is the 5th in the series from saxophonist Mars Williams, mashing holiday classics with works by saxophonist Albert Ayler, with the amazing sextet of Josh Berman on cornet, Jim Baker on piano, viola & Arp Synth, Brian Sandstrom on bass, guitar & trumpet, Steve Hunt on drums, Peter Maunu on violin and Kent Kessler or Krzysztof Pabian on bass.

This year's An Ayler Xmas, the 4th in the series from saxophonist Mars Williams, expands to a double CD with recordings from two bands: Josh Berman, Jim Baker, Kent Kessler, Brian Sandstrom & Steve Hunt (Chicago); and Steve Swell, Hilliard Greene, Chris Corsano, Nels Cline & Fred Lonberg-Holm (NYC); in incredible free jazz mashups and bash-ups of Holiday favorites.

Spanish tenor saxophonist Juan F. G. Vinuesa leads his quartet with Josh Berman on cornet, Jason Roebke on bass, and Mikel Patrick Avery on drums and percussion, three bright stars of the Chicago scene, performing Vinuesa's compositions and arrangements of lyrical modern jazz that blend structure and melody with plenty of space for free playing; wonderful.

A young and fresh voice in the creative Chicago improv scene, pianist and composer Matt Piet, who leads his own trio and the band Four Letter Words, and one third of Rempis/Piet/Daisy, introduces a new quartet with saxophonist Nick Mazzarella, cornet player Josh Berman, and drummer Tim Daisy, a superb example of the energetic and active Chicago scene.

Bassist Jason Roebke leads his octet with Keefe Jackson, Greg Ward, Jason Stein, Josh Berman, Jeb Bishop, Jason Adasiewicz, and Mike Reed in a set of collaborative compositions, lyrical yet free improvisation from some of Chicago's finest players.