Anyone looking for some free Rock Band tracks had best go out and pre-order either the South Park Season 11 DVD or Disturbed’s new album from Best Buy, as it has been revealed that both will be carrying some free DLC.

The two songs you might want for free from pre-ordering the Disturbed album are:

* “Inside the Fire” by Disturbed
* “Perfect Insanity” by Disturbed

Interestingly, the South Park DVD will carry different tracks, this time featuring three songs in an as yet unrevealed pack. The Disturbed CD launches on the 3rd June, with South Park Season 11 expected to hit on the 12th August.

The two Disturbed tracks will be coming to the Xbox Live Marketplace in June, according to Harmonix. Head on over to Best Buy now to get pre-ordering, whilst keeping an eye out for any news on what tracks South Park will be carrying. Speculate what they might be in the usual place.