(Music Downloads Not Rated by the ESRB) "Sorrow" by Bad Religion downloadable single. Please Note: Many songs are available both as singles and as part of a Track Pack, so please carefully consider your purchases before downloading. For all song credits please visit www.guitarhero.com.(Music Downloads Not Rated by the ESRB) "Sorrow" by Bad Religion downloadable single. Please Note: Many songs are available both as singles and as part of a Track Pack, so please carefully consider your purchases before downloading. For all song credits please visit www.guitarhero.com.