Everyone dreams of being a rock star, don’t they? Most of us have had a go at playing air guitar, or singing into our hairbrushes, even if we wouldn’t inflict our dubious musical talents on other people. There’s just something irresistibly glamorous about the idea of being a famous musician. So much so, apparently, that even celebrities aren’t immune to the siren call of the rock ‘n’ roll dream. Here are ten actors who’ve tried, and largely failed, to launch a secondary career as musicians…