Foo Fighters, Wembley Arena

Godlike Genius Dave Grohl roars back with a rejuvenated five-piece line-up

Fresh from being anointed a Godlike Genius at this week's Shockwaves NME Awards, Dave Grohl celebrated with a roaring two-hour set with his recharged Foo Fighters at Wembley Arena, still a dismal dive despite the major refurbishment which put the entrance at the wrong end. However, Dave basks in the reputation of being the Nicest Man in Rock and a thoroughly good egg (Lemmy says so, and nobody argues with him), and he successfully flooded this unprepossessing shed with good vibes mixed with shattering quantities of decibels.

Singles & Downloads 5

Singles vinyl and virtual from Ellie Goulding, Quasi, Gabriella Cilmi and Rose Elinor Dougal

Quasi, Bye Bye Blackbird (Domino)

The "Bye Bye Blackbird" on offer here is not the jazz stalwart favoured by everyone from Peggy Lee to Miles Davis. It is, instead, a garage guitar-pop concoction from perennial underdog trio Quasi from Portland, Oregon, that prolific centre of American indie guitar raucousness. At the core of the band, ex-husband and wife Sam Coombes and Janet Weiss have always appeared happy, throughout eight albums, to veer into wilful lo-fi messiness whenever their natural aptitude for a tasty melodic song threatens to interfere. This time, though, they've blown it.

Them Crooked Vultures, Corn Exchange, Edinburgh

The supergroup impress on its debut album tour

From the moment the roadies began assembling Dave Grohl’s drum-kit in a manner that resembled the construction of the Queen Mary on Clydeside, it was clear that power was going to be the watchword of last night’s Edinburgh appearance by Them Crooked Vultures, the supergroup that’s threatening to give the term a good name.

Dinosaur Jr, Koko

Alternative rock survivors as vital as ever

Dinosaur Jr never change.  Formed in 1984, the trio added a heavy dose of rock classicism to the then-current sound of US hardcore, inadvertently inventing grunge in the process.  Since then, members have come and gone around lead singer/guitarist J Mascis – eventually returning in 2005 to their original lineup featuring Lou Barlow (also leader of Sebadoh and Folk Implosion) on bass and “Murph” on drums – and the Mascis has calmly watched scenes come and go.

Kurt & Sid, Trafalgar 2 Studios, Whitehall

If Vicious had been there, would Cobain have died?

The death of Nirvana frontman Kurt Cobain in 1994 has provided a densely populated field of daydreams for conspiracy theorists, several of whom hotly insist that the troubled avatar of Grunge was murdered. Conversely, he may be playing in a ZZ Top covers band in Peru with Elvis and Jim Morrison. Whatever, playwright Roy Smiles has pursued a more original angle.

Picking up on a rumour that there had been somebody with Cobain on the night of his suicide, Smiles exploits Cobain's well-documented fascination with deceased Sex Pistol Sid Vicious, and wonders aloud what would have happened if the spirit of Sid had been "summoned from the desperate mind of Kurt Cobain to debate self-destruction and the pointlessness of suicide".

It's a fragile, fanciful construction, but Danny Dyer (Sid) and Shaun Evans (Kurt, obviously) manage to imbue the claustrophobic two-hander with a resonance and pathos which may be more than it deserves. The tiny Trafalgar 2 is transformed into the spare room over Cobain's garage where he was found dead from a shotgun wound. Cobain's mental chaos is reflected in the random assortment of stuff scattered around the floor -  pizza cartons, toy cars, ashtrays, wine boxes, LPs by The Clash and the Dead Kennedys, a collection of dismembered dolls - while Evans cossets and cuddles the fateful pump action shotgun like it's the only true friend he ever had.

The real-life Vicious was a wasted, felonious punk for whom remaining upright was a significant challenge, but Smiles amplifies and embroiders his spike-haired, swastika-daubed persona to convert him into a shrewd junkie-savant. Though cheerfully coarse and foul-mouthed, leaning forwards with mouth agape and swinging his leather-clad limbs like an ape with learning difficulties, Dyer's skilfully-conceived Vicious gradually reveals hidden layers. He goads the nihilistic Cobain with increasing savagery to take another look at his life and his apparently insurmountable problems, in the hope of planting a seedling of hope.

In contrast to Sid's London-geezer oikishness, Cobain seems tedious and solipsistic, lecturing Sid in a humourless monotone about his gruesome family who loved hunting animals and taunting homosexuals. He even had a couple of uncles who shot themselves. "I've been scared since I was three years old," he bleats. "There's evil out there, man."

"More self-pity," Sid retorts caustically. "Where's the violin?" Snatching up Cobain's laboriously penned note to posterity, Vicious treats it to a scathing critique. "The Lord of the Rings isn't as long as your suicide note, Frodo," he taunts.

As Vicious deploys a cunning selection of devices, ranging from a vein of camp humour that might have impressed Kenneth Williams to exhortations in Latin, Cobain is forced to mount a defence of his commitment to self-extinction. Gradually we can appreciate that he has humour, intelligence and self-awareness, but has reached what, for him, is the only acceptable decision. Not even Sid's furious tirade that a man with a wife and child has no right to top himself can pierce his oddly detached composure. Finally, all Vicious can offer is to keep him company to the end, since he knows full well the horror of dying alone. I kept thinking of a line from the Foo Fighters, the group formed by Cobain's former bandmates - "this is the blackout, don't let it go to waste."