Band member's first release is 'not a big deal'
Band will play in the capital next week (May 27)
Band play headline slot at the Brighton bash
Wolfmother and Lightspeed Champion to play too
Jon Fratelli bounces back from voice problems
Robyn also signs up for London festival
Scottish rockers will man the decks later this month
'Chelsea Dagger' leads to 'hometown' sing-a-long