Milo Murphy's Law - The Mezzo Sopranos, Act 1: Baritone in a Deli [Song] (Smooth Opera-tor) 

The Mezzo Sopranos opera begins with Antonio of the Mezzo Sopranos noticing a Baritone entering his deli, and already Murphy's Law strikes backstage.
Music clip from Milo Murphy's Law Season 1 Episode 4b Smooth Opera-tor.
I do not own Milo Murphy's Law, as it's owned by its creators Dan Povenmire and Jeff "Swampy" Marsh, as well as Disney. This video was only uploaded for entertainment purposes.