 In March 2012 , American alternative rock band Soundgarden announced through its Facebook page that its song " Live to Rise " would be included on the film 's soundtrack . Additionally , the Indian rock band <unk> released a music video for its single " Hello <unk> " , which serves as the theme song for the film 's Indian release . Hollywood Records released the soundtrack concept album inspired by the film , Avengers Assemble , on May 1 , 2012 , the same day as the score . 
