In most operas, every major character gets to sings at least one aria . Basso buffo Many comic opera have a basso buffo. This standard role always sung by a male singer with a low voice. This word refers to a style of opera and opera performance. A singer's term, chest voice refers to a particular way of producing a tone.
Notes produced by head voice are higher, rounder and usually softer.
Heldentenor A heldentenor usually sings the male lead of any Wagner opera. A good Heldentenor is extremely rare. Every opera has a libretto. The libretto is the script, the screenplay, the book, and the lyrics of the show. The prima donna is the singer who plays the heroine.