Session playing on copyrighted cover songs?

[nickmontopoli]

Hello! I’m selling session violin playing and have a copyright question:

I get a decent number of offers for "can you play on my cover of _______ " and I’m wondering what the legal status of this is? Assuming that many buyers have not secured licenses to this material, am I liable if I take the gig? (Haven’t yet taken any for this reason!)

Thanks!