Trawl through any one of those numerous list articles - the ones with titles like, ‘The Top 10 songs written in under an hour’ - and you’ll inevitably find the tale of Paul McCartney awakening one morning with the melody to Yesterday/floating around his mop-topped head.
The story goes that Paul, convincing himself that some form of subconscious plagiarism had taken place (and lacking the search tools of the modern age) played this embryonic classic to friends and musicians, asking if any could recognise it.
