Grey's Anatomy: 7.18 'Song Beneath The Song' - Promo

"Song Beneath the Song" - In a series first, the music that has been at the heart of the show and been beloved by fans comes to life for Grey's Anatomy: The Music Event. A cataclysmic event rattles the doctors of Seattle Grace to the core, as Callie, on the verge of an enormous life-changing moment with Arizona, envisions her hospital and friends as it has never-been-seen before.

The episode airs on THURSDAY, MARCH 31 (9:00-10:01 p.m., ET) on the ABC Television Network.