Patapon hands-on at Siliconera.

"I’m pleased with how innovative Patapon is. I tried out a two level build of it where the first level was designed to get you used to controlling a small tribe of creatures. You don’t move them with the analog stick or a simulation style cursor. The walking eyeballs only respond to drum-like rhythms. Pressing the square button dishes out a “pata” sound and the circle button makes a “pon” sound. Four of these sounds in a row link up to make a single command. For instance, if you want the tribe to shuffle forward you make the “pata pata pata pon” beat by pressing square, square, square and finally circle. If you want them to take another step forward you repeat the sequence."

Full Source: Siliconera