Ouendan 2 hands on at 1-up.

"Osu! The Ouendan/Elite Beat Agents franchise is quickly becoming a staple for Nintendo's dual screen portable, each title serving as an exemplary model of not only a fantastic rhythm game but also a game perfectly suited to the touch screen. So when expanding the franchise to its third installment, what do you change to produce another top-notch release? Well, why change anything if it ain't broke?"

Full Source: 1-up