In the previous chapters, we have described several computational techniques that address some critical issues of MER and provide a basis for emotion-based music retrieval. This chapter describes some possible directions of future research that can be extended from the techniques introduced in this book. As Klaus R. Scherer concluded in the foreword of Music and Emotion: Theory and Research [159], we hope this book will inspire more multidisciplinary-minded researchers to study “a phenomenon that has intrigued mankind since the dawn of time.”