Some years ago in Liverpool (1970 ish) there was a guy called Ken Adams who appeared at most folk clubs looking for a floor spot. He played "Air Guitar" and sang mainly early Beatles songs.
He actually persuaded some unfortunate guy to act as his manager at one time and got quite upset when he was refused a spot at one club I was involved in. He had the most hideous voice imaginable but his guitar imitations were great.
They dont make em like that anymore