Late producer Sir George Martin is described as A Painter in Sound on Cherry Red/El’s new collection of his Pre-Beatles Productions and Classical Influences.  While Martin has been anthologized in the past, most notably on the unparalleled 6-CD set Produced by George Martin in 2001, there’s always room for another one – in this case, an eclectic 4-CD journey that’s largely far-removed from the rock which made Martin famous. The title of the set is derived from a Martin quote repeated in its booklet.  “When I joined EMI, the criterion by which…