[jeffool]

It has been done! In particular a look at the "quack" that Coulton used in his version (instead of cussing like Mix-a-lot did): http://geeklikemetoo.blogspot.com/2013/01/about-that-quack.h...

He also points to a great example indicating that the beginning was likely edited too: http://imgur.com/a/F0HTP#1

Also, if you're someone that trusts their own ears and has headphones, you can hear Glee's in your left earbud, and Coulton's in your right, in this pairing: https://soundcloud.com/suudo/joco-vs-glee-baby-got-back

[tunesmith]

Wow, those links are spectacular. Thanks for highlighting them.

Here's why this is an issue. Coulton released his sound recording under the Creative Commons, by-nc-sa . If they used his sound recording, Fox/Glee is infringing all three parts of that license:

- They didn't attribute - They released it commercially - They didn't release it share-alike

A creative commons license is additive, so they could have worked around it by contacting Coulton and getting permission ($$).

Since they did none of that, Coulton has legal grounds here, specifically relating to the use of the sound recording. In my IANAL opinion. :-)