Musicovery is a cool new site for streaming music that has some of the best visualization features I have seen. You can select genre you want, the timeframe of the music and the mood you are interested in.

Just one click in the energetic/positive quandrant and U2 was playing for me, after a little Tom Jones I refined the selection to be just the music from this decade and the music was brought up to date.

If you want to refine it further just hover over one of the genres and the same mood matrix shows up allowing you to pick the tempo of the music you want to listen to within that genre.

The user interface is an ajax based visualization of the music you will be getting soon, making for a great experience navigating to the music you want to listen to.

The Musicovery business model is simple : small and unintrusive on-page advertisement for the low-quality service (32 kbps), and subscriptions (2 euros/month, depending essentially on the cost of telecom) for a reasonable-quality sound (128 kbps).

For more details on Musicovery visit Master New Media.