Jonathan Coulton did an acoustic cover of Sir Mix-A-Lot’s 1992 Baby Got Back back in 2005. Apparently, the creators of Glee liked his rendition so much that they did a cover of his cover… and now Coulton is suing FOX . Maybe. Probably not. But fans on both sides are tweeting angrily.

Listen to both beat by beat in the player above and judge for yourself.

It is an interesting copyright quandary but I think Coulton just wanted a heads up and a little credit. Read the full write up on Mashable.