1x129 - Tom and Jerry

Tom, famous baritone Signor Thomasino Catti-Cazzaza, enthralls a concert audience with his rendition of "Largo Al Factotum" ("Il Barbiere Di Siviglia") while Jerry strives for sleep under the stage. When mouse attempts to stop cat, it's a case of basso buffo until Tom ends up beneath the floor and Jerry finishes the concert.