Silly Symphonies (1929) and related work:
Silly Symphonies (1929)
A series of animated shorts, set to music, often prominently so, often experimental and with few recurring characters, back when such a thing was possible at Disney.
I wish the series had continued on this track.
References here: “Hittin’ the Trail for Hallelujah Land” (1931).
A good deal more advanced than “Red-Headed Baby” (1931), but perhaps Disney had already begun to rip off Warner Bros. by this point.