I’ve got a bit of new music lately, and I’ve noticed that the genre is always a bit off. Genre is a pretty tricky thing to figure out for most modern music, as there’s so much ‘cross-pollination’ going on in the music world. Additionally, over a single album, several genres may be visited (eg. folk, acoustic, pop).
There’s no way anyone’s going to go through every track independently and assign a genre (unless they’re seriously O.C.D). So, automatic genre setting (a new AutoRate feature?).
It looks like there has been some work done in the field, although it looks like it’s all still at the early-research stage; I haven’t found any available software. So there’s another possible project.
Another use could be to build a database of tracks in the local music library, and offer similar tracks when playing, constructing an automatic playlist. The same could be done with an online database, similar to Pandora.