Ida Maria is like a child in charge of a bucking bronco - the bronco being her unique voice. It's an ululating yelp speckled with gravelly grunts, and it pours from the elfin Norwegian's throat as she clings to the mic stand, apparently shocked at what she can do. Remarkable as it is, though, there's more: during this first London headliner, she ricochets off the drum kit, rolls on the floor and sprays a bottle of water at her guitarist, maintaining an astonished expression all the while.

The missionary-educated Ida has been hailed as "sectionable but sensational", which is as good a summary as any. She has spent the last month introducing British audiences to her very physical performance, and word has spread: queueing for a drink, one man says he was so impressed with an earlier gig that he has brought four friends tonight.

They can't have been disappointed. Though Ida is less unhinged here than she has been known to be (she has enlivened the atmosphere at gigs by biting other musicians' backsides), there is plenty of Iggy Pop-style writhing and howling. And, to counterpoint the physicality, she even sings some songs - six of them, each basic but smartly crafted, in a tradition stretching back to the Ramones. She possesses that band's gift for the idiot-chorus, too, meaning it takes no encouragement for the crowd to scream the line: "I like you so much better when you're naked!"

The madness of Better When You're Naked is superseded by that of Oh My God, which culminates in Ida's voice giving out as she roars, "Oh! My! Gaaad!" And that's the end of the show. Watch out for this extraordinary creature next year.