Two of the coolest bands can't stand each other!

The lead singers of The Kooks and The Arctic Monkeys have been involved in a feud for a year - over a guitar!

Monkey Alex Turner (who is Alexa Chung's main squeeze) got a kick in the head from Luke Kooks cos Alex tried to disconnect his guitar at a gig.

Luke, who used to date Fearne Cotton, must be gutted that Alex has bagged his own tv presenter girlfriend.

Don't fight boys - we love you both!