Evan Parker – soprano and tenor saxophones | Barry Guy – bass | Paul Lytton – drums

Recorded in concert at the Maya Recordings Festival 23 – 25 September, 2011 at Theater am Gleis, Winterthur, Switzerland. Music composed by Evan Parker, Barry Guy (PRS/ MCPS/PPL) and Paul Lytton (GEMA). Sound Engineers – Walter Schmid and Martin Gersberger. Photo of Evan Parker by Gérard Rouy. Photo of Barry Guy by Dmitrij Matvejev. Photo of Paul Lytton by Danas Mikailionis. Mixed and mastered by Arūnas Zujus at MAMAstudios. Design by Oskaras Anosovas. Producer – Danas Mikailionis. Co-producer – Valerij Anosov. Special thanks to Max E. Keller.

Tracklist CD: 1. Obsidian 22’31” 2. Chert 13’11” 3. Gabbro 17’29” 4. Scoria 8’21”