"Song Beneath the Song." also known as Grey's Anatomy: The Music Event, is the eighteenth episode of the seventh season of the American television medical drama Grey's Anatomy, and the one-hundred and forty-fourth episode overall. It was named after a song by American singer Maria Taylor. Written by series creator Shonda Rhimes and directed by Tony Phelan, it premiered on ABC in the United States on March 31, 2011.