Thanks, everyone. I've ended up with a strange, eclectic list. Here's what I've got: Mama (Connie Francis), That's All Right Mama (Elvis), Mama Look A Boo Boo (Belafonte), Mama Tried (Merle Haggard), Mama You Sweet (Lucinda Williams), Che La Luna (Louis Prima),, Mamas Don't Let Your Babies Grow Up To Be Cowboys (Willie Nelson), Mother (Tori Amos), and The Sweetest Gift (Linda Ronstadt). Cheers!