Chanson was a viable R'n'B / disco group, actually a duo, consisting of vocalists James Jamerson Jr. (bassist, son of the famous Motown bassist James Jamerson Sr.) and David Williams (guitarist) and fleshed out with studio friends and musicians.
The two of them met while playing with the Temptations' road band, and this is when they hatched the idea of Chanson.
They released two LPs "Chanson" and "Together We Stand".
By 1980 the duo was labeless and forced to return to studio session work. Not that it's a bad thing, in fact their real success is behind the scenes. Together and seperately they can be heard on countless pop, rock, R&B and disco tracks.