mikesworkbench wouldn't worry about it not many backing tracks out there that's carbon copy's of the originals. a get around copyright,:} i remember years ago playing the clubs the odd time had to pay a performing rights fee a couple of quid ,think its paid by the clubs pubs etc in the music licence now just get on with it and enjoy yourself
PERFORMING A COVER SONG LIVE: The rock band or solo performer does not need a license to perform a cover song live. It is the club, restaurant, or concert venue that is supposed to obtain a license or licenses for generally hosting music performances, which includes the live music as well as the recorded music they play over the sound system. These are licenses from PROs, or performing rights organizations, namely ASCAP, BMI, SESAC. These organizations sell licenses on their websites. They also send agents to clubs and restaurants to try to get them to buy a license.
just don't record yourself using a cover and try to sell it cos that's an whole new ball game. otherwise your clean to go lol