There is a total of 6421 clues beginning with op
- OPERA SINGER LEONTYNE
- Opera singer Lily
- Opera singer Luisa whose name can be found on some menus
- Opera singer Luisa, for whom a poultry dish was named
- Opera singer Marilyn
- Opera singer Mario
- Opera singer Merriman
- Opera singer Mills
- Opera singer Mitchell
- Opera singer Mitchell of "Porgy and Bess"
- Opera singer nicknamed "La Divina"
- Opera singer Norman with a National Medal of Arts
- Opera singer of former years
- Opera singer Pinza
- Opera singer Raffanti
- Opera singer Renata
- Opera singer Roswaenge
- Opera singer scrawls graffiti?
- Opera singer Simon
- Opera singer Simon ___
- Opera singer supreme
- Opera singer Terfel
- Opera singer Tetrazzini
- Opera singer Troyanos
- Opera singer who played Nellie on "Downton Abbey"
- Opera singer with nine Grammys, to a double-crosser
- Opera singer ___ Te Kanawa
- Opera singer's highlight
- Opera singer
- Opera singers
- Opera singers' concerns
- Opera singers
- Opera solo
- Opera solo piece
- Opera solo
- Opera solos
- Opera song
- Opera song for one
- Opera song sung while in the spotlight
- Opera songs
- Opera songs for one
- Opera soprano Lehmann
- Opera soprano Lucine
- Opera soprano of the Gay Nineties
- Opera soprano
- Opera spear-carrier
- Opera specialty
- Opera specialty
- Opera sponsors
- Opera staple
- Opera star
- Opera star Alda
- Opera star Anna
- Opera star Bartoli
- Opera star Berger
- Opera star Callas
- Opera star Cecilia
- Opera star Eames
- Opera star from Melbourne
- Opera star Leontyne
- Opera star Lily
- Opera star Marilyn
- Opera star Nellie
- Opera star of fifty years ago
- Opera star of Gay Nineties
- Opera star of the '20s and '30s
- Opera star of the Gay Nineties
- Opera star Pinza
- Opera star Regina
- Opera star Reri ___
- Opera star Scotto
- Opera star Simon
- Opera star Steber
- Opera star Stevens
- Opera star Tebaldi
- Opera star Tetrazzini
- Opera star who knows the words before the libretto's written?
- Opera star who sang at Bayreuth's 1953 Festival
- Opera star's asset
- Opera star, 1912 to 1935
- Opera star
- Opera stars
- Opera stars
- Opera starter?
- Opera style
- Opera style using everyday events rather than myth
- Opera subtitled "Wedded Love"
- Opera supe's prop
- Opera superstar
- Opera synopsis heading
- Opera tableau
- Opera tenor who attempts to rescue his lover from Hades
- Opera term that's sometimes a woman's name
- Opera term
- Opera text
- Opera text
- Opera texts
- Opera that became a musical
- Opera that climaxes with a firing squad
- Opera that debuted in 1900