A drama, either tragic or comic, of which music forms an essential part; a drama wholly or mostly sung, consisting of recitative, arials, choruses, duets, trios, etc., with orchestral accompaniment, preludes, and interludes, together with appropriate costumes, scenery, and action; a lyric drama.
The score of a musical drama, either written or in print; a play set to music.
There's no half-singing in the shower, you're either a rock star or an opera diva. Josh Groban
An opera begins long before the curtain goes up and ends long after it has come down. It starts in my imagination, it becomes my life, and it stays part of my life long after I've left the opera house. Maria Callas
It is essential to do everything possible to attract young people to opera so they can see that it is not some antiquated art form but a repository of the most glorious music and drama that man has created. Bruce Beresford
Opera happens because a large number of things amazingly fail to go wrong. Terry Pratchett
If you have to be in a soap opera try not to get the worst role. Judy Garland