A popular remedy for earworms is to sing that bit at the start of It's Not Unusual
the bit without any real words: doop, de-doop, doop, de-doop. This chases out the other earworms, a bit like when they used to give people malaria to cure syphilis.
(
_Felix 's school of dance and occult sciences,
Tue 31 Jan 2012, 20:11,
archived)