This week on Night Lights it’s “Jazz Studio 3 & 4: John Graas and Jack Millman,” two more entries in Decca’s mid-1950s Jazz Studio series. John Graas was a classically-trained French horn player who worked with several famous big bands in the 1940s and who studied with both Lennie Tristano and West Coast music guru Wesley La Violette. In the 1950s he…