| Opera singer ___ Callas | 23 |
| Opera singer ___ Te Kanawa | 26 |
| Opera singers' concerns | 27 |
| Opera star's asset | 22 |
| Opera synopsis heading | 22 |
| Opera that debuted in 1900 | 26 |
| Opera that debuted in Cairo | 27 |
| Opera that opens in Memphis | 27 |
| Opera that premiered in Cairo | 29 |
| Opera villain, typically | 24 |
| Opera villain, usually | 22 |
| Opera villainess, often | 23 |
| Opera villainess, sometimes | 27 |
| Opera villainess, typically | 27 |
| Opera villainess, usually | 25 |
| Opera with a rustic theme | 25 |
| Opera with a slave girl | 23 |
| Opera with a swan prop | 22 |
| Opera with eye-popping sets? | 28 |
| Opera with Princess Amneris | 27 |
| Opera's --- Te Kanawa | 25 |
| Opera's birthplace | 22 |
| Opera's cigarette girl | 26 |
| Opera's Dame Nellie | 23 |
| Opera's famed La ___ | 24 |
| Opera's Frederica von --- | 29 |
| Opera's Montserrat | 22 |
| Opera's Obraztsova | 22 |
| Opera's slave princess | 26 |
| Opera's Varnay et al. | 25 |
| Opera's ___ Te Kanawa | 25 |
| Opera, ballet and so on | 23 |
| Opera, with "La" | 26 |
| Opera-house accommodation | 25 |
| Operagoer's accessory | 25 |
| Operagoer's wear, maybe | 27 |
| Operate a rummage sale | 22 |
| Operate like French doors | 25 |
| Operate stealthily, as a sub | 28 |
| Operated using a light beam | 27 |
| Operated, as machinery | 22 |
| Operates, as a hand organ | 25 |
| Operates, as machinery | 22 |
| Operatic African slave | 22 |
| Operatic and dramatic villain | 29 |
| Operatic barber et al. | 22 |
| Operatic baritone Antonio | 25 |
| Operatic basso Enzo _____ | 25 |
| Operatic composer Montemezzi | 28 |
| Operatic crowd-pleaser | 22 |
| Operatic encore choice | 22 |
| Operatic high priestess | 23 |
| Operatic love scene, usually | 28 |
| Operatic masterpiece of 1871 | 28 |
| Operatic melodies for one | 25 |
| Operatic movement circa 1900 | 28 |
| Operatic offering by Gounod | 27 |
| Operatic offering by Puccini | 28 |
| Operatic offering by Verdi | 26 |
| Operatic offering by Wagner | 27 |
| Operatic performance for one | 28 |
| Operatic play-within-a-play | 27 |
| Operatic singer on a sofa? | 26 |
| Operatic singing style | 22 |
| Operatic solo andrecitative | 28 |
| Operatic soprano from N.Y.C. | 28 |
| Operatic soprano Geraldine | 26 |
| Operatic soprano Gluck | 22 |
| Operatic soprano Marilyn | 24 |
| Operatic soprano Netrebko | 25 |
| Operatic tenor Vickers | 22 |
| Operatic tenor ___ Alagna | 25 |
| Operatic tour de force | 22 |
| Operatic Trojan princess | 24 |
| Operatic villains, often | 24 |
| Operating at peak capacity | 26 |
| Operating automatically | 23 |
| Operating procedures (abbr.) | 28 |
| Operating procedures: Abbr. | 27 |
| Operating room apparel | 22 |
| Operating room assistant | 24 |
| Operating room devices | 22 |
| Operating room necessities | 26 |
| Operating room number? | 22 |
| Operating room request | 22 |
| Operating simultaneously | 24 |
| Operating system choice | 23 |
| Operating system for PCs | 24 |
| Operating system option | 23 |
| Operating system since 1969 | 27 |
| Operating system, abbr. | 23 |
| Operating with efficiency | 25 |
| Operating without _____ | 23 |
| Operating-room process | 22 |
| Operation Allied Force gp. | 26 |
| Operation at the Alamo | 22 |
| Operation by an obstetrician | 28 |
| Operation Cyclone org. | 22 |
| Operation Desert Fox, e.g. | 26 |
| Operation Desert Storm | 22 |