Think of this as a north-of-Watford improv supergroup, bringing together musicians based in Derby, Leeds and Manchester, who have been involved in some of the most innovative and vital jazz-related projects in the UK over the last few years, for a devastatingly creative live session. In full swing, the group's energies find a natural home in ecstatic free-jazz, with Dave Kane's towering double bass rising like a sturdy supporting column, Johnny Hunter's drums falling forwards with a ferocious internal momentum and Adam Fairhall's piano lunging fiercely. But it's in the quieter moments – the slow build-ups of the full ensemble pieces, and the smaller duo and trio groupings – that their imaginations really run riot: gamelan-like prepared toy piano and the upside-down bow bouncing off the bass stings like a twanging diddley-bow; the saxophone's key-pads sounding hollow rattles while the electric guitar pings and swirls; and the vibraphone dancing around a filthily distorted prepared electric piano. Full of unexpected textures and surprising sounds, the session convincingly proposes a 21st century British response to some of the challenges laid down by the AACM 50 years ago.