Seriously great musician who has made brilliant music in so many eras. R and B with Spencer Davis when he was really young, to trippy pop with early Traffic, quality rock in short-lived Blind Faith and later period Traffic, to good solo hit songs in the early 80s (despite the bad synth parts) and even in his later years quality albums like About Time.
Brilliant live too. Saw him in 1975 with Traffic and several times in the last 15 years, whenever he tours the UK. One of the great 'white soul' voices and a superb keys and guitar player. And he plays bass with his B3 pedals for good measure.
One of the best musicians to come out of the UK imho.