My email box has been filling up with various versions of this question - After the Oscars, the first commercial was for the TV programs Grey's Anatomy and Dancing With the Stars and had a dance diva singing. Was it Anastacia or Taylor Dayne?
The dance diva is Taylor Dayne and the song is called "Crash." Produced by Jack D Eliott, "Crash" is being prepped as the follow up single to "Beautiful" off of Taylor's new cd Satisfied. For more information:
Taylor Dayne - Satisfied - CD Review


