Long famed for their fisticuffs and slanging matches, the intense sibling rivalry between Liam and Noel Gallagher now includes allegations of plagiarism.
In an interview with Uncut magazine, Liam has said his estranged brother and former Oasis bandmate “swiped” the pair's old material for a new solo project, the details of which are still to be confirmed.
“I've heard his f****** new record cos I f****** sung on half of it,” Liam said. “F****** nonsense... it's all very hush-hush round his camp. I put up with 18 years of that f*****, so I'm (not) arsed (with) what he's doing.”
Alan McGee, who signed Oasis to Creation Records in the 1990s, has heard two of Noel's new tracks and backed Liam's claims. But Mr McGee also praised Noel's new material.
According to the former Oasis frontman, the tracks on his brother's new record were written during sessions in Los Angeles for Oasis's last album, released in 2008. “When I was in America for Dig Out Your Soul, he swiped some because he obviously wanted to do a solo album,” Liam said.
Oasis broke up in August 2009 after the brothers' backstage fight at the Rock en Seine festival near Paris. The fracas, which caused damage to one of Noel's guitars, resulted in the cancellation of the gig and entire European tour.
A statement from Noel appeared on the band's website two hours after the argument. It stated: “With some sadness and great relief... I quit Oasis tonight. People will write and say what they like, but I simply could not go on working with Liam a day longer.”
Noel played his first post-Oasis gigs at the Royal Albert Hall last March. Liam, meanwhile, formed a new band Beady Eye last year with Oasis's remaining members.
Liam also told Mojo magazine in a separate interview that he thought Noel's new record contained “songs for 50-year-olds”.
He told the publication that Oasis fans should “let go of the Oasis dream”, likening the situation to a soured love affair.
“It's like wanting your girlfriend back after she's f***** you off. You'll end up getting yourself ill,” he said.
“In my experience of Liam Gallagher, he does tell the truth,” Mr McGee said of Liam's claims.
“But as far as the comment about 50-year-olds is concerned, I don't have a problem with it, because I'm 50. I am a fan of both Liam and Noel's music.”
Mr McGee said Noel's new material sounded like Oasis circa their celebrated 1995 album What's the Story Morning Glory?, which has sold an estimated 22m copies worldwide.
Spokespersons for both Noel and Liam Gallagher refused to comment.