Alice in Chains

Scala, London The metal faithful gave a jubilant welcome to the returning grungers – even without late singer Layne Staley, says Alexis Petridis

Spinal Tap

Pop review<par break>Wembley Arena, London The spoof metal band's air of out-of-their-time befuddlement is still marvellously, preposterously intact, says Ian Gittins

Metallica

O2 Arena, LondonMetallica still inspire devotion, even though it wasn't so long ago that their stock was at its lowest, writes Jamie Thomson

New music on Wednesday

Henry Barnes: Guardian.co.uk/music's resident expert combs this week's new releases field with his musicological metal detector and separates the gold coins from the rusty nails