Though best known as a double-bassist who helped birth the ‘New Thing’ in the 1960s, in more recent years, Alan Silva (now aged 77) has turned his attention increasingly to the synthesiser.

On this live performance with two up-and-coming Scandinavians, he demonstrates not just the wide range of sonorities he's able to wrest from the instrument but also his skill at incorporating them into a spontaneously improvised context. The piece lurches into life with jagged, abstract gestures from sax and drums, to which Silva adds stabbing chords and blunt punctuations with a sound like an electric piano, before widening the palette with New Age washes of atmospheric shimmer: a sustained tension that encourages a high, tip-toe trill from Rasmussen's alto.

Solberg's drums thrash and clatter beneath, until a sudden pause opens a space for Silva to drop in twinkling sci-fi effects, eliciting pinched bleats from the sax and distant clanging bells. And so it goes on for nearly 46 minutes: an ever-shifting, constantly refiguring vista of unpredictable environments. The youngsters do well to keep up with an imagination that shows no sign of slowing down.