The crossword solution for the term 'O Mio Babbino Caro, E.G.' is ARIA, which stands for 'AIR' in Italian. It is a term used to describe a self-contained piece of music for a solo voice, typically one that is part of an opera or oratorio. The term is derived from the Italian word for 'AIR' or 'MELODY'. O Mio Babbino Caro is an ARIA from the opera Gianni Schicchi by Giacomo Puccini. It is a soprano ARIA that expresses the character Lauretta's love and desperation for her father's approval.