Few will forget back in 2012, when Canadian singer Carly Rae Jepsen came crashing into the airwaves of pretty much every pop station on the planet, with the sugary synth-pop sounds of Call Me Maybe. With a track as big as that – even Jepsen herself has said she was sick of hearing it on the radio – it would have been easy to assign the singer to one-hit-wonder status.

“Are you ready to do battle with us?” bellows Johan Hegg, Amon Amarth’s imposing yet cheery frontman, immediately prompting an enthusiastic roar from the packed-out Brixton crowd. “GOOOOOOD!” He’s the most genial Viking you could imagine - six-foot plus with a gigantic beard and massive hair, a drinking horn holstered on his thigh, and a huge smile plastered across his face.

“Thanks for being in here with us tonight,” Wayne Coyne begins, “when you could be outside with the universe shining down on us.” Having clearly experienced a pre-gig epiphany from the unexceptional South London sky, The Flaming Lips singer seems primed to take us all higher. And so this 20th-anniversary celebration of their breakthrough LP The Soft Bulletin begins with an explosion of joy.

There’s a wolf howl and Yxng Bane (pronounced Young Bane) jumps off a block on stage and his furry hooded coat flies open and the arena erupts in screams. The pit is filled almost exclusively with seventeen year old girls, excellently contoured and sporting chunky trainers and crop tops like it’s the early 2000s all over again, and he’s wearing nothing underneath except many hours at the gym.

There’s jazz, and there’s transcendent jazz. Kamasi Washington and his band are the latter. His group — who hail from Los Angeles and have played together since childhood, made waves in 2015 when they released The Epic, a three-hour concept album, followed up by Heaven and Earth, which similarly explored esoteric conceptions and abstruse riffs.

For a self-made band that found success via the creation of quirky, imaginative YouTube videos spread via social media, there's a level of expectation regarding the same kind of creativity in their live shows. But in  fact Canadian indie band Walk Off The Earth's REVO tour experience is a very simple one. 

It would probably be best to start this review with a mention of the band, The War on Drugs, whose 2014 LP, Lost in the Dream, saw them realise their potential in a flurry of "Best Of" lists and almost unbelievable hyperbole. However, before we get fully into that, I should state, for the record, that I’ve always hated Brixton Academy. The rake plays havoc with my calves and the beer tastes homeopathically weak, while sound spirals and muddies as it travels into the gods before falling back to earth like a plague of shit brown noise.

Before Janelle Monáe even materialises at Brixton’s O2 Academy, her presence is already felt in the stagecraft. Lab-coated, bow-tied techies unsheath the instruments from their black covers, revealing a glimmering monochrome set-up in the centre of a giant white cube reminiscent of the "Q.U.E.E.N." video. Three - count ‘em, three - men see to the polishing of Monáe’s microphone. The build-up is every bit as meticulous as the stunning 90 minute set that’s to follow.

Someone came all the way from Saskatchewan to see New Order in Brixton last night, which is either a measure of the esteem in which the band is held or an indication that someone had a pile of Air Miles to get rid of. Judging by the positively rapturous cheers that went up as Bernard Sumner ambled onstage for the first London date of their first tour in six years, it must surely be the former.

To dubstep or not to dubstep, that was the question perplexing the nearly 5000 metalheads jammed into the Brixton Academy to see Korn.