I’m sorry my little Weird Al’s, but copyrights with existing music prevent us from making any covers, re-recording an existing song, or swapping existing lyrics to add your own personalization.
Believe it or not, this even includes re-using parts of a song written and recorded by a Songfinch artist.
If you want to learn about all things related to song usage rights, check out this article for a deeper dive.
If you want to just get started on your original idea, then head here!