The first stage of Actraiser, "Fillmore" has music that is very similar to "The Gears Go Awry" from PoR. Koshiro made both tunes, and it shows. Actraiser is known for the quality of its soundtrack, but the game itself is pretty damn awesome, as it's one of the few "Hybrid" games (it's half Action/Platform, and half Simulation/CityManagement).