[mikeponders]

Good work! I'm trying this out. It seems it tries somehow to match keys tempos and percussion characteristics.

Some suggestions:

- Have a relevant/irrelevant button, so users can tag useful music and suggestions that were irrelevant. Save that data and use it to make your model better, either in realtime or incrementally.

- Allow some other options for sorting tracks also. Have the most relevant but also the most popular (as in charting) on top. Or maybe sort by the user rankings (how relevant they think a track is).