Moonlight Sonata Mvt. 3 (Full Version) is a mod stage by Southey (TSST) and United Mod ( UMod).In TSST, this may be the one of the hardest songs on The South's history, but a little tied with Beepy's song Freedom Dive that may be the hardest mod song of all time. And it is for real, inside Piano Tiles 2, but it is too long for the original to put the real rhythm inside. The difficulty of this song is Legendary. But
in UMod, Southey has fixed the song and the current speed is 10.667/10.700/10.800. So, the difficulty of the song raised to Impossible.