I've been looking for a website that is not label specific that will notify me when a band or other performer releases new music.  I would love it if i could go on to Amazon or discoggs or even lastfm, select Porcupine Tree, or Cat Jahnke or Meshuggah and say "send me an email when they come out with a new album."

Aren't there feeds or anything to do this with?
--