You can export songs from other titles, such as Guitar Hero Encore: Rocks the 80s , directly into GH2 as bonus tracks.
Playing on a modded JTAG/RGH Xbox 360 allows you to go far beyond the original disc by adding custom songs and DLC that are otherwise difficult to obtain. Popular Content & Mods Guitar Hero 2В [Jtag/RGH]
This is the definitive way to play GH2 on RGH hardware. It is a massive "quality of life" mod that adds features like 120Hz support (for compatible monitors), custom themes, and the ability to easily add your own song packs. You can export songs from other titles, such