Crow Song is an insert song for the first episode of the anime series Angel Beats. It is performed by Girls Dead Monster in the anime series, and is sung by Iwasawa's singing voice actor. It is included in the album "Girls Dead Monster: Keep the Beats!" which features most of the band's performances. In the manga, it was the first song Iwasawa wrote. Vocals: Masami Iwasawa from Girls Dead Monster.