I've recently been haunted by a jolly-sounding tune that I half-heard in a Spanish supermarket a few weeks ago. I dimly remembered it from the 80s, and had a sort of hazy image of the singer, including funny haircut, probably from an old Top of the Pops. Gradually the name of the singer came to me, in fragments, eventually forming themselves as Gilbert O'Sullivan! So I googled him, to hear the whole tune, clarify his visual image, and check the lyrics.
Fascinating outcome - The song was called 'Alone again - naturally'. The haircut was there. The tune was jaunty and catchy and hummable. But the words were in striking contrast - 3 episodes of personal tragedy, quite devastating when read off the page rather than heard. Be interested to hear anybody else's thoughts....