I came across a video of Beyonce rehearshing for her Grammy performance and the cutest thing happened. Some how Blue got ahold of a live mic and decided to sing along with her mother as she rehearsed. The reaction from the 32 year old singer is priceless as she hears her daughter mumble in the background for a a second, sing surfboard then call out to her. Now Ill be honest, I dont even let my teenage neices sing this song in front of me….but I did smile after watching this video. Check it out.