According to IGN its "half Puyo Puyo and half Elite Beat Agents". I'd say it was more Bust A Grove but thats me. It was recently released in Japan in July under the title Ontama: Onpu-tou Hen. It was pretty damn fun too and I'm pleased that its getting a release stateside from those lovely people at Atlus. An IGN Preview is here. Its scheduled for release in November this year or you could grab the Japanese version instead.