If you want official rhythm gaming on PS4 without hacking, buy Rock Band 4 . It has a massive DLC library. While it lacks Guitar Hero 2 ’s specific tracklist, you can buy songs like "The Trooper" (Iron Maiden) and "Free Bird" (Lynyrd Skynyrd) as DLC.
: You must convert an original PS2 ISO file into an installable .pkg file using tools like PS2-FPKG .
