Music Recommendation I have idea of creating Content based Music recommendation system based on Music signals, Now I am asking how I can extract signal features from Music and how to represent them. There after I may find similarity between them to make recommendation?

Your ideas will help me, Thanks!
It is a very broad question. You need to specify the type of categorization of this recommendation system. Then you can think about which features might be relevant to this system. Generally you need to apply a classification approach on music signals.