In The Groove 2 Song List -

In the Groove 2 was designed as a direct competitor to Dance Dance Revolution (DDR). Its song list is famously diverse, spanning hard electronic dance music, rock, world music, classical remixes, and hidden "gimmick" tracks. Unlike DDR, ITG introduced variable difficulty scales (1–12, later expanded in ITG2 to 1–13 for certain songs) and modifier-heavy charts.