Ontamarama review at IGN.

"Ontamarama is a somewhat tricky to pronounce music game with an identity crisis. If DDR ever decided to marry Elite Beat Agents and raise a family, their first kid would look something like Ontamarama (just don't try to think about the inherent creepiness of games marrying each other). The result of this strange union is an amazing charming game that unfortunately plays worse than its inspiration. Sometimes it's better to perfect one solid gameplay element before you try blending together a couple."

Full Source: IGN