Elvis Costello center stage with Sir Elton John.

Elvis holds Q & A with Sir Elton John.

Sir Elton John

Sir Elton John at the piano.

Sir Elton John and Elvis Costello perform.

Sir Elton John on set.

Musician, singer and songwriter - Sir Elton John.

Elvis and Sir Elton John perform for the crowd.

Elvis Costello performs with Steve Nieve on accordion.

Elvis Costello with guests Julian Schnabel and Lou Reed backstage.

Elvis Costello performs with (from left) Tony Garnier on bass, Larry Campbell on mandolin, Steve Nieve on accordion and Jenny Scheinman on violin.

Elvis Costello

Host Elvis Costello with the legendary Lou Reed.

Elvis Costello with musician Lou Reed and artist/filmmaker Julian Schnabel

Elvis, Lou Reed and Julian Schnabel on the set.

Lou Reed at the mic with Elvis looking on.

Elvis Costello performs.

Duet with Lou Reed and Elvis Costello

Guest James Taylor on set.

James Taylor performs.

James Taylor and Elvis Costello acknowledging the crowd.

Elvis Costello performs

Elvis Costello on the set.

The incomparable Tony Bennett.

Tony Bennett performs.

Tony Bennett with the brilliant Diana Krall on piano.

Tony Bennett and Elvis Costello on set.

Tony Bennett charms a captive audience - including Elvis and pianist Bill Charlap.

Tony Bennett with Elvis center stage.

Elvis Costello holds Q & A session with jazz great Tony Bennett.

Host Elvis Costello with Tony Bennett and Bill Charlap at the piano.

Lead vocalist and bassist, Sting, rehearses at The Apollo.

The Police drummer/vocalist, Stewart Copeland on set.

Elvis Costello fields questions with Stewart Copeland.

Elvis Costello with Sting.

Elvis Costello with The Police - Sting, Andy Summers and Stewart Copeland.

Rufus Wainwright on set.

Rufus Wainwright discusses his music with host Elvis Costello.

Rufus Wainwright at the mic.

Elvis performs with guests Kris Kristofferson and Rosanne Cash.

John Mellancamp arrives outside the Apollo.

John Mellancamp on set.

John Mellancamp performs.

Musician/vocalist/composer Norah Jones.

Norah Jones on the set.

Norah Jones sings.

Singer/songwriter Rosanne Cash on the set.

Rosanne Cash carries on the family tradition.

Soprano Renee Fleming and host Elvis Costello on the set.

"The people's diva" soprano Renee Fleming.

Singer/songwriter Rufus Wainwright, soprano Renee Fleming, host Elvis Costello and musician/singer (and Rufus' mom) Kate McGarrigle perform.

Musical innovator Herbie Hancock with host Elvis Costello.

Herbie Hancock at the keyboards.

Herbie Hancock at the piano with Christian McBride on upright bass.

Herbie Hancock with Elvis Costello center stage.

Jakob Dylan on the set.

Guest Jakob Dylan with Elvis Costello

Jakob Dylan answers questions.

Jakob Dylan on guitar with Elvis Costello.

Jakob Dylan and Elvis Costello get ready to perform.

Singer Jenny Lewis takes the mic.

Jenny Lewis performs.

Singer and songwriter Jenny Lewis.

Jenny Lewis and musician M. Ward.

Singers Jenny Lewis and Zooey Deschanel out front with Jonathan Rice and M. Ward on guitars.

Guitarist and producer, M. Ward.

M. Ward on guitar.

Dueling guitars - Jonathan Rice and M. Ward.

Zooey Deschanel at the mic with Elvis Costello on guitar.

Zooey Deschanel performs.

Zooey Deschanel with host Elvis Costello