Mother’s Day is approaching (May 12), and in honor of this special day, Rdio has put together a playlist full of tracks that pays tribute to mothers everywhere. From Christina Aguilera to Alicia Keys, some of the music from today’s hottest moms is included in the playlist appropriately called Dear Mama – A Musical Tribute as well as song dedications from 2Pac, Ozzy Osbourne and B.B. King