Largo al factotum from The Barber of Seville

Rossini's patter-packed aria, about our very own barber having to "do everything," has been immortalised in popular culture - both live action and cartoon. From Tex Avery to Tom and Jerry, that repeated "Figaro" section is etched into a lot of the public's minds, mine included.
Sam performs this as his closing piece, after the interval, at the Clonter Opera Prize - where he won First Place and the Audience Award.