IST, configured as the duo of double bassist Simon H. Fell and cellist/percussionist Mark Wastell, performing a virtual quartet at London's Cafe OTO, using using pre-recorded fragments of solo work from late guitarist Derek Bailey and tap dancer Will Gaines, combined with sections of silence of unforeseeable length, and then combined with the live musicians; amazing.

The duo of Dimitra Lazaridou-Chatzigoga on zither and Mark Wastell on his electronics set including bowls and shruti box, formed for the release concert for Angharad Davies' "Six Studies" in 2014, recording this excellent improvised dialog of rich and unusual sound.

ist (The Improvising String Trio) of Rhodri Davies (harp), Simon H. Fell (bass) and Mark Wastell (violincello) performing at The Natural Music Club in London, 1997, using unorthodox techniques in indeterminate systems and free improvisation for fascinating results.

Ist - Rhodri Davies (harp), Simon H. Fell (double bass) & Mark Wastell (violoncello) - recorded this fascinating, quietly active lower case work at Total Music Meeting in Berlin 2001.

Since 1995 the string trio of Rhodri Davies, Simon H. Fell & Mark Wastell have created sparse, introspective improvisation, performing here at the Contemporaneamente festival in Lodi, Italy.

A live presentation at the Shunt Lounge, London Bridge in November of 2006, including an AMM duo of John Tilbury and Eddie Prevost.

Tim Barnes on snare drum and amplification and Mark Wastell on amplified textures, tuned metal, making small, mostly unidentifiable sounds with a Cage-style open flair.