A stunningly powerful quartet of electric jazz captured live at the 2022 Freejazz Festival in Saarbrucken, Germany between German alto saxophonist Frank Gratkowski (Skein), Japanese guitarist Kazuhisa Uchihashi (Ground Zero, Altered States), electric bassist Dan Peter Sundland and drummer Steve Heather, performing four assertive, charged and cathartic collective improvisations.

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).

21 wild rides from the fully improvised duo of guitarist Kazuhisa Uchihashi on guitar & effects, and Tatsuya Yoshida on drums, voice & sampler, two CDs from four separate concerts at Japanese venues Akihabara Goodman in 2012 & 2014, Kichijoji FOXHOLE in 2014, and Okubo Hikarino-Uma in 2017; intensely exciting and magnificently masterful improv instrumental rock.

Saxophonist Junji Hirose met Kazuhisa Uchihashi at Foxhole in Kichijoji in 2014 and 2015, Uchihashi performing only on Hans Reichel's daxophone--wood shapes played in a variety of ways to create unusual sound--as heard on these 10 surprising and wonderfully idiosyncratic recordings.

The 4th improvisation release of drummer Yoshida Tatsuya (Ruins, Koenji, &c) and guitarist Uchihasi Kazuhisa (Altered States) is a DVD audio release presenting 36 remarkable live tracks from 6 concerts recorded 2004-2012.