Noel Gallagher, who is a guest on tonight's Late Late Show, has said it is "character building" to play to fans more interested in Oasis songs than his new material.
The Manchester band split in 2009, with siblings Noel and Liam having a final falling out and becoming estranged.
Gallagher told GQ Hype: "It’s really character building when you play a song from Oasis, which everyone knows and the place goes f****** apeshit, and then you play your new stuff and there’s clearly a f****** drop-off in people digging it.
"And in between those songs, people are constantly shouting out for stuff that you wrote 20 years ago.
"But you either sink or swim," he said.
"When you’re writing for a band that’s become a brand and a huge… business - and this is only with hindsight, as I didn’t realise this at the time - you’re kind of writing with the weight of the brand hanging over you.
"The songs have to sound a certain way to sell 70 million records and you’re not going to just throw it all up in the air on a whim."
Gallagher also said of Oasis’s rise to fame: "To me, the 1990s was a lot of working-class intellectuals who were not really connected, who all came through at the same time in politics, music, fashion, photography, art, sport…
"There was also a lot of northerners, which is another unusual thing, which is not really the way anymore."
Gallagher has also confirmed that a new Oasis documentary to mark 25 years since their gigs at Knebworth is to be released.
The film will feature never-before-seen archive footage from the legendary gigs when they played to a crowd of 280,000 fans across two nights.
The news comes after Noel and Liam set up a firm called Kosmic Kyte via Companies House – which is for "motion picture production activities", reports the NME.
Speaking to Zoe Ball on BBC Radio 2, Noel said, "There’s a lot of stories in the press about it being a film company for a biopic, which of course it’s not,"
"The gig Oasis did at Knebworth is 25 in August and back in 1996 we’d filmed it all really professionally with loads of cameras, we had cameras on the trains with fans.
"But for one reason or another, the film never came out but as it’s the anniversary coming up, we’re going to be releasing it now.
"I’ve seen a tiny trailer of it and it’s a fantastic snapshot of a bygone era before the internet. It’s great, really great."
Amy director Asif Kapadia previously produced Supersonic, a 2016 film about the band's rise from Burnage in Manchester to the Knebworth shows, while two years ago, Irish director Gavin FitzGerald made a film about Liam's solo career.