Is mattinata off Leoncavallo an opera aria?

Yes, Mattinata off Leoncavallo is an opera aria. It is a tenor aria from the opera Adriana Lecouvreur by Francesco Cilea. The aria is sung by Maurizio, a nobleman who is in love with Adriana, a famous actress. The aria is a passionate love song in which Maurizio expresses his desire for Adriana.