Looney Tunes, Merrie Melodies, Happy Harmonies… and it all came down to this: Sir Gee Whiz On The Other Side Of The Moon. Needless to say, the latter years of Hugh Harman and Rudolf Ising were rough.
Breaking away from Disney (and Charles Mintz) in 1930, they struck gold by hooking up with Leon Schlesinger and establishing the Looney Tunes and Merrie Melodies for Warner Bros. In an effort to upgrade their product and compete with Disney, the duo left producer Leon Schlesinger in 1933 and, after sub-contracting a few Cubby Bear cartoons for Van Beuren, accepted an offer to provide Happy Harmonies color cartoons for MGM. It was their work at MGM that ultimately laid the foundation for the later success of Hanna and Barbera and Tom & Jerry.