Album: Isotope, Golden Section, (Cuneiform)

English jazz-rock in the mid-Seventies was a stealthy project and an acquired taste.

Still is. Isotope were interesting, though: a tight, highly electronic quartet led by guitarist Gary Boyle, notable for their disinclination to sound American except in the Miles Davis sense.

Here's a bunch of live cuts recorded in Germany, the UK and the US between 1974 and '75, while touring behind their second album, 'Illusion'. Feathery rather than funky, they certainly never threatened to change the world. But they did tickle it.

Pick of the album: 'Illusion' has just the right number of notes – lots

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