A collection of six duo recordings from musician, composer, and improviser Peter Soderberg, investigating different tuning systems and the idea of hybrid instruments, recording with Katt Hernandez (violin), Stina Hellberg Agback (harp), Mats Persson (clavichord), Sten Sandell (piano), My Hellgren (cello) and Vilhelm Bromander (contrabass).

The first duo album by pianists Sten Sandell and Lisa Ullén, recorded in their home country of Sweden, performing eight freely improvised piano works which include the two-part "Double Music" and two-part "Onyx", each recording contrasting complex interplay of discord and harmony with beautiful passages of introspection and intellectual depth; a remarkable merging of masterful talent.

In 2000, saxophonist Mats Gustafsson and curator John Corbett organized a 16-piece free music big-band featuring key members of the Chicago and Swedish scenes, recording these two impressive, ecstatic, and explosive works.

Two extended improvisations from pianist Sten Sandell's trio with bassist Johan Berthling and drummer Paal Nillsen-Love, recorded live in Tokyo in 2008.

An all-star lineup for European free jazz with Evan Parker, Sten Sandell, Ingebrigt Haker-Flaten and Paal Nilssen Love on a double CD recorded live at Belleville.

The piano and vibraphone duo of Sten Sandell and Mattias Stahl in improvisations that borrow from both Sun Ra and contemporary classical such as Cage, Cowell, Xenakis, &c.