There are two separate issues here, which don't have to be linked.
   1. JS performing your song (which is fine)
   2. False attribution of authorship (which isn't)

The question is, what difference will it make? JS gets kudos that should be yours: if your words are at all controversial he will get the flak: possible problems if he wants a follow-up: and confusion if (from your video) you are already known as the author. In a century or two it might even be a Mudcat topic!