by Kev Geoghegan
Radio 1 music reporter
The Enemy, Dirty Pretty Things and Reverend and the Makers are among the bands who have played a gig in aid of homeless charity, Crisis, in London.
The concert, at the Roundhouse venue in London, was headlined by Supergrass.
The Modfather performs on stage
It also featured performances from the likes of Graham Coxon, New Young Pony Club and Babyshambles' Drew McConnell.
The artists all joined up on stage at the event's climax for the first ever live performance of Consequences, a track recorded by a rock supergroup which included the bands playing the gig plus The Gossip's Beth Ditto.
Her vocals were provided by New Young Pony Club's Tahita Bulmer.
Live and Die
Paul Weller also joined up with The Enemy frontman Tom Clarke to perform one of the The Jam's signature songs, That's Entertainment.
Dirty Pretty Things take the Roundhouse by storm
The Modfather then joined the band again to perform the hit single, We Live and Die in These Towns, from their chart-topping debut album of the same name.
Clarke told Newsbeat that the collaboration was intended for critics who accuse The Enemy of ripping The Jam's sound.
He said: "It's a sort of a two fingers up isn't it?
"We spoke to Paul about which songs to do, and neither of us think That's Entertainment or We Live and Die sounds like the other one.
"But I think we're probably the only two people in the world that think that."
The Consequences single is due out in April.