Pata pata pata pon. Pon pon pata pon. Those are two of the beats that will be hard to remove from your head after playing this quite excellent PSP 2D side scroller from SCE Japan and the creators of LocoRoco.
You control a flag bearer, who can construct chants that will direct an ever-increasing army of, basically, walking eyes. Time it correctly and, as you beat, they shout and respond to the instructions – each combination produces a set effect – and it is possible to move the army through the levels smoothly and flawlessly, racking up a huge combo in the process.