It is one of life's most common irritations: the song you do not even like that becomes stuck in your head.
Take, for instance, Mission-born Carly Rae Jepsen's big hit, Call Me Maybe. It's tuneful, it's catchy - and once it gets in your head it's hard to get out…
Some songs just get stuck in your head, whether you like them or not. However, a recent study claims to have found the key to kicking that Taylor Swift tune out of your head: puzzles.