Who: tUnE-yArDs

Where and when: West Holts stage, Friday 1.15pm

Dress code: Simple black for multi-instrumentalist Merrill Garbus – she lets her mighty pipes do the talking - and standard jeans and T-shirts for her quartet of geeky young men. Then there's some gold lamé all-in-ones as seen on the pair of suprise dancers who make an aerobic appearance (complete with natty white towels) for the final song.

What happened: Tearing up the slightly sleepy West Holts stage, New Englander Garbus rouses a lolling crowd to their feet with her ululating vocals and wild rhythms. At one point she has the whole field jumping in unison as she spins while singing and playing her ukelele – you can't blame her drummer for taking pictures of the crowd at this point. The set goes out in a blaze of call and response yeahs and West Holts is on its feet, hangovers forgotten.

Who's watching: A modest crowd of immodest enthusiasm. Lots of blokes "feeling it" in straw hats – and a cluster of girls going wild down the front.

High point: The brilliant Hatari, which Garbus prefaces with a yelled "Can you dance to it?" Yes we can.

Low point: A couple of technical hitches that saw the beat disappear – luckily it doesn't take the enthusiasm with it.

In a tweet: Only Merrill Garbus could make a ukelele seem totally badass.