"Sure about that? The Beatles developed a repertoire of pop music built on the British music-hall idiom (and perhaps to a lesser extent the songs of Noel Coward) - they were every bit as much an indigenous product as MacColl with the Radio Ballads. And it wasn't a liability for them."

Feel obliged to point out that the Beatles music-hall-type stuff only entered their repertoire after they'd become massively successful in the UK and US doing covers of US R&B songs like 'Twist & Shout'. Not to mention their own amazingly convincing own take on US R&B, like 'I Saw Her Standing There' or 'Baby You Can Drive My Car'. They'd recorded a good 6 or 7 albums before things like 'Being For the Benefit of Mr Kite', by which time frankly they could have just farted on record and would still have sold millions. The music-hallish stuff was only ever the occasional album track, anyway.