It normally takes listeners only a few spins to realise that a song isn't for them, but sometimes even the most reviled and loved songs can see a second wind.

The Beatles' Apple Records signed one of its first artists in 1968 after supermodel Twiggy discovered Mary Hopkin on TV.

Paul McCartney remembered an old Nat King Cole song. That inspired him to write The Beatles' classic "Mother Nature's Son".

A friend of the Beatles said Paul McCartney was nicer than John Lennon. Still, people somehow trusted him less.