1035 Views 1 Reply Latest reply: Feb 20, 2011 6:06 AM by ed2345
It is an iTunes feature for picking songs for mixes that go well together.
You can read a nice description here: http://support.apple.com/kb/HT3843 or search in iTunes Help for the article "Play a Genius playlist or Genius Mix."
Be aware that it is better than random, but is not exactly Watson. Don't be surprised if it gives you Christmas songs in August, etc.