Mood-based music playlists have been a holy grail for audio entrepreneurs since the dawn of the MP3. There's just something unshakable about the idea that your iPod might sense your mood and play music to fit your precoffee grogginess or sun-filled Saturday frolic. Unfortunately, everyone from MIT to Memorex has experienced mixed success trying to crack the music mood algorithm.
The problem with automatic playlists based on mood is that the scope of music can often be overwhelming (what's more energetic, Techno or Oompah Polka?) and the technology used to analyze and assign mood attributes to music files … Read more