A signboard lists the opera's featured cast as Eduardo Selzeri, Michele Maltese and Carlo Jonzi, references to Edward Selzer, Michael Maltese and Chuck Jones, their names appear in Italian dialect, and are then transferred to English.
For a quick sequence where we see a close up of Bugs's hands massaging Elmer's scalp to the notes of a short piano solo in the opera, they are deliberately drawn with five fingers for the sequence so they can believably follow the tune.
In this short, Mel Blanc as Bugs Bunny did not say his trademark quote of, "Eh, what's up doc?"
The title refers to the opera performed in the cartoon, The Barber of Seville, or The Useless Precaution, an opera buffa in two acts by Gioachino Rossini with a libretto by Cesare Sterbini. The première took place on Wednesday 20 February 1816, at the Teatro Argentina, Rome.