All of the Innocent Series songs, from Pop'n CS 7, 8, and 14, respectively:
INNOCENT / Kimagure na Kazemuki / Water Stand
INNOCENT 2 / Kimi to Hohoemi to... / Water Stand
INNOCENT 3 / Ruten to Kaiten / Water Stand
For Innocent and Innocent 2, unromanized raw Japanese can be found
here and
here respectively.
In the case of Innocent 3, long version is preferred, but I'll take anything.