Listen to Cosy in the Rocket (Main Theme from "Grey's Anatomy") online. Cosy in the Rocket (Main Theme from "Grey's Anatomy") is an English language song and is sung by Soundtrack. Cosy in the Rocket (Main Theme from "Grey's Anatomy"), from the album The Greatest TV Songs, was released in the year 2017. The duration of the song is 0:32. Download English songs online from JioSaavn.