Many artists nowadays are said to owe their fame to the internet, but the case of Chicago rockers OK Go is clear-cut.

Since enjoying an international hit with Get Over It back in 2002, they bubbled under the pop radar until late last year when they released a hilarious, painstakingly choreographed homemade video for the single A Million Ways.

The clip became an unexpected marketing coup for the group, notching up nine million downloads, and the video for new single, Here It Goes Again - a compulsively watchable single-take clip of a dance routine on treadmills - has achieved the same feat.

The effects were clear last night. Despite OK Go being merely the support act for Minneapolis punks Motion City Soundtrack, a seething crowd crammed the venue from 7.30pm, desperate to see their online idols in the flesh. Enthusiastic showmen to a man, OK Go compensated in raw energy for what they lacked in technical proficiency.

The band's distinctive look featuring a lot of paisley pattern, as well as tight shirts, ties and drainpipes wrapped round skeletal legs clearly went down well with the large contingent of extremely vocal teenage girls, especially when singer Damian Kulash dived into the crowd during Here It Goes Again.

The encore produced more screaming as they provided the strangely brilliant spectacle of the full dance routine for A Million Ways. But with its irresistibly crunchy beat and rabble-rousing chorus, Get Over It was the night's musical high point, a fact that no amount of clever marketing can change.