| Opera prince | 12 |
| Opera premiere: Venice, 1857 | 28 |
| Opera premiere: St. Petersburg, 1836 | 36 |
| Opera premiere: Rome, 1900 | 26 |
| Opera premiere: Paris, 1881 | 27 |
| Opera premiere: Milan, 1831 | 27 |
| Opera premiere: Cairo, 1871 | 27 |
| Opera premiere of 1835 | 22 |
| Opera premiere at La Scala in 1887 | 34 |
| Opera pieces | 12 |
| Opera piece | 11 |
| Opera persona | 13 |
| Opera performed today, yet neglected | 36 |
| Opera patron Kahn | 17 |
| Opera parts | 11 |
| Opera part, in Orly | 19 |
| Opera part | 10 |
| Opera overture | 14 |
| Opera ovation | 13 |
| Opera output | 12 |
| Opera or hard | 13 |
| Opera or concert conclusion? | 28 |
| Opera or concert attachment | 27 |
| Opera or ballet part | 20 |
| Opera opening | 13 |
| Opera opener | 12 |
| Opera on which "Rent" was based | 41 |
| Opera on which "Rent" is based | 40 |
| Opera often paired with "Cavalleria Rusticana" | 56 |
| Opera offerings | 15 |
| Opera offering | 14 |
| Opera of note | 13 |
| Opera of a certain price | 24 |
| Opera of 1900 set in 1800 | 25 |
| Opera number (11) | 17 |
| Opera number | 12 |
| Opera notables | 14 |
| Opera melody | 12 |
| Opera mecca | 11 |
| Opera made into a Broadway musical with an Elton John/Tim Rice score | 68 |
| Opera locations | 15 |
| Opera libretto | 14 |
| Opera legend who was close to Onassis | 37 |
| Opera legend Luciano | 20 |
| Opera legend | 12 |
| Opera lass who broke a vow | 26 |
| Opera language? | 15 |
| Opera laid in Egypt | 19 |
| Opera laid in Africa | 20 |
| Opera interrupter of note | 25 |
| Opera impresario Caldwell | 25 |
| Opera immortal | 14 |
| Opera house that opened with "Faust" in 1883 | 54 |
| Opera house song | 16 |
| Opera house shout | 17 |
| Opera house section | 19 |
| Opera house seating section | 27 |
| Opera house level | 17 |
| Opera house in Milan | 20 |
| Opera house highlight | 21 |
| Opera house features | 20 |
| Opera house cries | 17 |
| Opera house city | 16 |
| Opera house boxes | 17 |
| Opera house box | 15 |
| Opera house attire, perhaps | 27 |
| Opera house attire | 18 |
| Opera house at Lincoln Center, casually | 39 |
| Opera highlights | 16 |
| Opera highlight | 15 |
| Opera high spot | 15 |
| Opera heroines, often | 21 |
| Opera heroine, usually | 22 |
| Opera heroine, often | 20 |
| Opera heroine with the aria "Einsam in trüben Tagen" | 65 |
| Opera heroine who sings "Einsam in trüben Tagen" | 61 |
| Opera heroine | 13 |
| Opera heroes | 12 |
| Opera hero, often | 17 |
| Opera hero's range, often | 29 |
| Opera hero and others | 21 |
| Opera heavy | 11 |
| Opera headpieces | 16 |
| Opera headliners | 16 |
| Opera hat | 9 |
| Opera great ___-Casazza | 23 |
| Opera great Pavarotti | 21 |
| Opera goddess | 13 |
| Opera glasses, e.g. | 19 |
| Opera glasses on a handle | 25 |
| Opera glasses | 13 |
| Opera girl et al. | 17 |
| Opera girl and others | 21 |
| Opera girl | 10 |
| Opera giant | 11 |
| Opera genre? | 12 |
| Opera for singer Cook? | 22 |
| Opera follower? | 15 |
| Opera flirt | 11 |
| Opera first performed in 1762 | 29 |