With more than 25 years of experience playing together in bands including Trio Kamosc, Gueuledeloup Quartet and The Achim Kaufmann Trio, alongside duo performances playing original compositions and the music of Herbie Nicols, here now in a double CD from two concerts in Berlin in 2022, with one third of the material exploring the music of Andrew Hill.

Describing their improvisation as a chemical reaction of positive and negative ions, the central trio of the ensemble Skein--Achim Kaufmann (piano), Frank Gratkowski (winds) and Wilbert de Joode (bass)--are heard in this incredible 2018 concert at Konfrontationen Festival as a septet with Tony Buck (drums), Richard Barrett (electronics), Liz Allbee (trumpet) and Uchihashi Kazuhisa (guitar).

A live recording of insightful collective improvisation recorded in 2019 at the Moers Festival in Germany, from Harri Sjostrom on soprano saxophone, Achim Kaufmann on piano, Adam Pultz Melbye on double bass, Dag Magnus Narvesen on drums, and Emilio Gordoa on vibraphone, in an extended exploration of subtle hues through effortlessly intense and inventive interaction.

The second release from Germany's Grunen Trio of Achim Kaufmann on piano, Robert Landfermann on double bass and Christian Lillinger on drums, a superb and forward-thinking piano trio using prodigious talent in eccentric ways, resolving to lyrical and rewarding improvisation.

Four masterful improvisers - Axel Dorner (trumpet), Andreas Willers (acoustic guitar & electronics) and Achim Kaufmann (piano) - performing as the .AAA. trio, and then each presenting a solo work, demonstrating their incredible music skills together and alone.

Drummer Christian Lillinger continues to adapt his band since his 2009 debut GRUND album, "First Reason", here demonstrating his strong skills as a leader, player, and composer.

"Grunen" (The Greening) is a live totally improvised recording from the trio of pianist Achim Kaufmann, bassist Robert Landfermann, and drummer Christian Lillinger.