Keane play the 02 arena, Groove Armada's annual Love Weekender takes place and the Somerset Series hosts its last two nights this weekend.

Keane
02 Arena, SE10
Just over a year since the release of their huge-selling second album, Under the Iron Sea, 12 months characterised by inter-band feuding and a spell in rehab for bad boy Tom Chaplin, Keane look united once more with this big gig in Docklands. (0870 534 4444). Sat 21 Jul, 6.30pm.

OMD
Indigo, SE10
Orchestral Manoeuvres in the Dark's Andy McCluskey is the man who gave the world Atomic Kitten. Now his old band has reformed in a bid to restore their credibility as influential synthpoppers. With founder member Paul Humphreys, they'll be performing some of their innovative work as well as the hits. (0844 844 0002). Tonight, 7pm

Lovebox Weekender
Victoria Park, E9
Groove Armada's annual party in the park has a stronger line-up than ever this year, with the dance duo joined by impressive names including Blondie, Super Furry Animals, the Bees and New Young Pony Club (Sat) plus the Rapture, Hot Chip, Tinariwen and Toots & the Maytals (Sun). Not to mention two huge comebacks in the shape of the B-52's and Sly & the Family Stone. (0870 040 0049) Sat 21, Sun 22 Jul, 10am-11pm

iTunes Festival
ICA, SW1
Still the big bands flock to the tiny ICA, courtesy of that rather successful legal download site. This weekend features Stereophonics airing their noisy new material (tonight); Aqualung, aka underrated singer-songwriter Matt Hales (tomorrow); and two decent upandcomers, Cherry Ghost and Air Traffic (Sun). Tickets free from www.itunes festival.com, until Tue 31 Jul

Somerset House Summer Series
Somerset House, WC2
Last two nights of gigs in possibly London's most impressive outdoor venue. Amy Winehouse will hopefully be celebrating her newfound status as favourite for the Mercury Music Prize here rather than in the pub tonight, while Hot Chip round things off with their geeky electronica tomorrow. (0870 145 1120). Tonight, Sat 21 Jul, 7.30pm