Harmonix released a fifth track pack for the Xbox 360, PlayStation 3, Wii, and PlayStation 2. The disc features 21 songs, and for the first time includes songs never before seen in the Rock Band series. These songs were exclusive to Rock Band Country Track Pack for a limited time before being released to the Rock Band Music Store by late 2009 and early 2010. The Xbox 360 and PlayStation 3 versions also include a code to export the songs to a hard drive for use in other Rock Band games. The Track Pack can also be played as a standalone game for all systems in the same manner as the AC/DC Track Pack and Track Pack Vol. 2.[15]