Jerry is being chased through the city by Tom before escaping into The Metropolitan Opera which is putting on a production of Bizet's Carmen. Tom manages to sneak into the building disguised as a musician and joins the orchestra, but takes every available opportunity to try and catch the mouse.
I can only assume that Carmen Get It! was director Gene Deitch's attempt at replicating the success of The Cat Concerto, winner of the 1947 Academy Award for Best Short Subject. But while the two cartoons share a common musical theme, they couldn't be further apart in terms of quality, Deitch's effort being another scrappily animated effort with some really weird sound effects. Needless to say, a golden statuette failed to make its way into Deitch's hands.
2 out of 10, with a very generous bonus point for somehow shoehorning in the marching ants, particular favourites of mine (even if they are badly animated in this instance).