At this moment the genres are all wrong for many tracks on the spotify. I would love to be able to tell my opinion about what is the genre for the current track that im listening. For example, only an ignorant would define Prodigy as hardcore techno. Its more jungle than hardcore techno. Of course single track can belong to many genre at the same time, and that is for people to decide!
Would you consider some way for users to "correct" the genres for the tracks? I love the Soundrop app, as music there is accurate enough because people can vote. This same mechanism where people can "vote" for the genre for every track could really work!
Please bear in mind that the Community is not an official Spotify support service. It's a place where we all help each other, whether we work for Spotify or not. So please use your discretion when using the forum.