8pm: Music

It’s been a rough few years of management and fiscal crises at Covent Garden in London, but now the house band, the Royal Opera Orchestra, is carrying the flag for a new administration and is about to reopen the opera house (after a $360-million expansion). Catch it in a greatest hits program, “50 Years of the Royal Opera,� at the Orange County Performing Arts Center tonight or on Friday at the Arlington Theatre in Santa Barbara.

* Royal Opera Orchestra of Covent Garden, Orange County Performing Arts Center, 600 Town Center Drive, Costa Mesa. 8 p.m. $15-$55. (949) 553-2422. Also Friday, Arlington Theatre, 1317 State St., Santa Barbara. 8 p.m. $25-$65. (805) 963-4408.

8pm: Theater

John Davidson stars in “Bully: An Adventure With Teddy Roosevelt,� Jerome Alden’s one-man show about the colorful 26th president, created from stories, speeches, letters and imagined conversations between the political roughrider and his friends, family and enemies.

* “Bully: An Adventure With Teddy Roosevelt,� Cerritos Center for the Performing Arts, 12700 Center Court Drive, Cerritos, 8 p.m., $27 to $42, (800) 300-4345; (562) 916-8500. Also Friday, 8 p.m. at McCallum Theatre, 73000 Fred Waring Drive, Palm Desert, $15 to $40. (760) 340-2787, (760) 220-TIXS.

8:15pm / Pop Music

Enrique Iglesias is just 24, but he’s already set a record by racking up 11 No. 1 singles on the Hot Latin Tracks chart. The pop heartthrob’s U.S. tour will raise funds for HACER, an organization providing scholarships to high school students.

* Enrique Iglesias, today and Friday at the Universal Amphitheatre, 100 Universal City Plaza, Universal City, 8:15 p.m. $28 to $58. (818) 622-4440.

Freebie: Deborah Scott, a 1998 Academy Award winner for “Titanic,� will join oft-nominated Aggie Rodgers for a talk about costume design, Cal Rep Theatre at Cal State Long Beach, 7 p.m., (562) 985-4326.