The Sónar festival occupies a very special place in the New Music calendar – and is this year expanding outwards temporally and geographically, with new franchises in Tokyo and A Coruña, Galicia. Now into its 17th year, the parent festival in Barcelona serves as a vital meeting point for those of all stripes who refuse to acknowledge the polarisation of avant-garde and populism, or of club culture and the mainstream music industry. With 10 or more main stages and untold off-piste club events around the city, it would be impossible to condense even a single day and night of Sónar Barcelona into a standard gig-venue show, but that's what A Taste of Sónar tried to do last night.

Maybe I hadn’t been paying enough attention. It was only at last year’s Children in Need concert, broadcast on prime time which featured the great and the good of British pop that it finally sunk in just how huge Muse have become – they were there appearing with Sir Paul McCartney, Take That, Leona Lewis and Paolo Nutini. Weren’t Muse the alternative Radiohead-lite band from Devon who sing politically loaded and enjoyably paranoid lyrics against the system and all it stands for?

Some years ago I saw Muse playing at the Corn Exchange in Cambridge. Towards the end of the show, at a climactic moment (I think it might have been during their proggy epic, “New Born”), singer and guitarist Matt Bellamy reached into a bag attached to his microphone stand, pulled out a handful of shiny golden confetti and flung it into the air. It fluttered downwards most attractively. It was a terrific show, with some truly powerful music, but as far as visuals were concerned, the confetti moment was about as good as it got.

Although The Arcade Fire are currently occupying column inches on the back of their new album The Suburbs, it’s fellow Montréal band The Besnard Lakes that are over here, playing dates on the back of their recent third album The Besnard Lakes are the Roaring Night. Both bands share a fondness for a full-on live assault that leaves audiences reeling.

Steven Ellison is one of the most fascinating figures in modern music. Son of Motown songwriter Marylin McLeod and nephew to Alice Coltrane, he's inspired in equal part by his own musical heritage, the slow-and-low hip hop of his home state of California, and British electronica and drum and bass. His fans include Damon Albarn, Erykah Badu and Thom Yorke (the latter appearing on this year's triumphant Cosmogramma album), his Brainfeeder and Low End Theory collective of musicians and DJs are among the hippest on earth, and the world is pretty much his oyster.