Mosaics presents a fascinating picture of a rich, multi-faceted life. It readily acknowledges that Collier was often single-minded in his dedication to strongly held views and sometimes perhaps unwisely persistent in his pursuit of same, but more importantly (like its stablemates on Tubby Hayes and Stan Tracey), it provides a valuable celebration of the work and legacy of one of the UK’s most important and influential musical figures.
London Jazz News

A hugely important and influential figure within the UK hotbed of modern-jazz musicians in the 60s and into the 70s. This is the latest in Equinox's attractively presented series of hardbacks on jazz subjects, and it's another erudite and academic assessment of a leading proponent of the music who determinedly ploughed his own - very deep - furrow. Duncan Heining's research embraces his own interviews with Collier and his associates, a thorough perusal of contemporary press coverage and sharply incisive and forensic analysis of the recordings in the Collier catalogue.
The Beat