Plot: Beat'n Groovy is a music video game developed by Japanese studio Voltex and distributed over Xbox Live Arcade. It was released on October 8, 2008. The game is based on Pop'n Music, a similarly styled arcade/PlayStation 2 game series that has not been released officially outside Japan. Wikipedia
Plot: Pop'n Music, commonly abbreviated as Pop'n, PM or PNM and stylized as pop'n music, is a music video game series in the Bemani series made by Konami. The games are known for their bright colors, upbeat songs, and cute cartoon character graphics. Wikipedia