Wanda Sykes Show avoids RIAA by playing public domain songs

The Wanda Sykes Show tonight featured plenty of songs we all know well, and will definitely not have to pay royalties on any of them. Why? All the songs were in the public domain -- classics such as We Wish You a Merry Christmas (yes, even at the end of January) and Jimmy Cracked Corn. Good ol' Wanda, gotta love her!