Album: Gary Burton/ Chick Corea, Crystal Silence, (ECM)

When the star duo's Crystal Silence first appeared in 1973, it heralded a new house-style of ambient-friendly chamber jazz, where Corea's piano and Burton's vibes seemed to float amidst the listening space like benevolent feng shui sprites.

This four-disc collection adds 1978's Duet album and a complete 1979 Zurich concert to the original recording, and it's all very good, if a little like being offered crème de menthe in a pint glass. The live version of "Señor Mouse" is particularly amazing.