Last week Metallica released a new album, Death Magnetic, on traditional CDs as well as downloadable content for Guitar Hero III. Fans quickly noticed that the sound quality on the CD version was noticeably below-par, thanks to the recording studio's decision to sacrifice range for loudness. However, the tracks released for Guitar Hero III made no such sacrifice, as proved by Mastering Engineer Ian Shepherd. NME found an audio clip comparing the two tracks. This comes alongside statements from Activision claiming that Aerosmith's recent venture into Guitar Hero is generating more success for the band than their actual albums.