A CABARET number is a type of musical performance that combines singing, dancing, and comedy. The term 'CABARET number' is derived from the French word 'CABARET, ' which means 'small restaurant.' A CABARET number typically consists of a SONG, dance, and comedic skit. In this particular crossword, the solution to the clue 'SONG' (4 letters) is 'TUNE.' Therefore, the answer to the term 'CABARET NUMBER' is a combination of a TUNE, dance, and comedic skit.