Depeche Mode were joined onstage by former member Alan Wilder at the Royal Albert Hall in London last night (February 17).
The keyboardist, who left Depeche Mode after 13 years in 1995, played piano on encore-opener 'Somebody' to a rapturous response from the sell-out crowd.
Fans are now speculating whether Wilder's appearance at the one-off Teenage Cancer Trust show could herald a return to the band.
Introduced on stage by Teenage Cancer Trust curator Roger Daltrey, Depeche Mode performed a sprawling 20-song set strewn with classics.
You can see photos from the show at the bottom of the page. The set-list was as follows:
1. In Chains
2. Wrong
3. Hole to Feed
4. Walking in My Shoes
5. It's No Good
6. A Question of Time
7. Precious
8. World In My Eyes
9. One Caress
10. Home
11. Come Back
12. Policy of Truth
13. In Your Room
14. I Feel You
15. Enjoy the Silence
16. Never Let Me Down Again
Encore:
17. Somebody (with Alan Wilder on piano)
18. Stripped
19. Photographic
20. Personal Jesus
The show in photos:
You can keep up to date with all the latest news from Gigwise by following us on Twitter and liking us on Facebook.

Red Hot Chili Peppers Chad Smith: People Always Think I'm Will Ferrell
Alex Turner Fights It Out With Jared Leto For Hottest Male Vote
Lil' Wayne's 'Tha Carter IV' Sells 964,000 Copies To Score Number One
Adele Cancels Cardiff Gig Tonight (September 7) And Blackpool Tomorrow (8)
Depeche Mode Play Final O2 Arena Show - Photos
Depeche Mode Play Epic Royal Albert Hall Show - Photos
Bestival Festival 2011: The 25 Must-See Acts
Foo Fighters' Dave Grohl To Muse's Matt Bellamy: The Best Guitarist Sex Faces
GQ Men Of The Year Awards 2011: Photos With U2, Tinie Tempah And More