Four strings, voice and trombone make up the multinational collective quintet of Davide Piersanti (trombone), Hui-Chun Lin (cello and voice), Sergio Andres Castrillon Arcila (cello), Ulf Mengersen (bass), and Klaus Kurvers (bass) who are captured live at "t-berlin" in 2016 for a set of inventive and active cooperative conversations named for Greek letters.

An unusual improvising string quartet plus alto saxophone, Thea Farhadian (violin), Ernesto Rodrigues (viola), Guilherme Rodrigues (cello), Klaus Kurvers (double bass) and Nuno Torres (alto saxophone) present the 11-part "De-col//age_", a slowly-developing work balancing unconventional approaches to their instruments with more conventional strategies.

Live recordings at Exploratorium, in Berlin, Geremany in 2010 from the quartet of Klaus Kurvers on double bass, Andrea Sanz Vela and Ernesto Rodrigues on violin, and Micha Rabuske on dlute, bass clarinet, and soprano sax, collective improvisation with complex interplay and a bright spirit as the group follows their instincts in interesting dialog.