Activision said on Wednesday it has begun offering its devoted fans the opportunity to download nine songs from the original Guitar Hero through Xbox Live Marketplace, and are available now.

Fresh new songs and other exciting content will be available on a monthly basis, Activision said. The initial downloads will include favorite finger-numbing tracks such as:

Guitar Hero - Track Pack 1

-Bark at the Moon (as made famous by Ozzy Osbourne)
-Hey You (as made famous by The Exies)
-Ace of Spades (as made famous by Motorhead)

Guitar Hero - Track Pack 2

-Killer Queen (as made famous by Queen)
-Take It Off (as made famous by The Donnas)
-Frankenstein (as made famous by The Edger Winter Group)

Guitar Hero - Track Pack 3

-Higher Ground (as made famous by Red Hot Chili Peppers)
-Infected (as made famous by Bad Religion)
-Stellar (as made famous by Incubus)

With all the tracks upgraded to the Guitar Hero II feature set, including co-op gameplay with lead, rhythm and bass guitar options, the songs will be available to download in packs of three, for 500 points per pack.
 In addition, fans will be able to assume the identity of their favorite Guitar Heroes with exclusive theme packs available for 150 points, and gamer pics for 100 points, respectively.

Featuring a fresh and expanded set list of more than 70 finger-melting fret burners, including 10 exclusive tracks for the Xbox 360, Guitar Hero II turns it up with a variety of deafening rock venues, HD remodeled characters, unlockable guitars, and different gameplay modes.

Guitar Hero II, published by RedOctane, is rated T for Teen by the ESRB.