Movieland Magic
Plot: Released as part of a series of WB shorts under the collective title of "Technicolor Specials" (WB production number 2003) this short most likely holds the WB house record for a 20-minute film containing footage from the most different titles in their inventory. It's theme of a singing guided tour of the lot (and some of the footage) is from 1944's "Musical Movieland", the former title holder, and it contains clips from 1939's "Quiet, Please" and "Royal Rodeo"; "Sunday Roundup" from 1936 and 1940's "The Singing Dude