Good game but the dancing is disappointing.
The game features a blob like creature and he has to dance and sing with other people. The features of the dancing is waving the remote in a direction to dance that way. If you dance in beat for a while, your boogie meter will fill up allowing you to do combos. To do this you wave your remote in the arrows shown at the bottom of the screen while holding 'B'. The dancing is plain with no exiting movement. But we still have the karaoke.
The karaoke is just like singstar or any other game like it. You sing in pitch to bubbles across the screen giving duration and timing. But there is one more thing which is the music videos. To make a music video you have two choices, dance and sing, sing, dance or dance then sing. The effects you add to your finished video are lame apart from the 3D effect which has some use if you have the glasses.
Overall the game is a bit disappointing but none-the-less, still fun.