Google has just added "/music" to their robots.txt file which can only mean one thing -- Google Music is getting closer. I had a couple of tips from someone with regards to Google Music last week that seemed to suggest things are happening.
Not only that, Google just today announced a deal with Pearl Jam that gives people free access to their new music video "Life Wasted" on Google Video under a Creative Commons license --
unfortunately it's only available in the United States now available to everyone.
Keep watching for more developments on the Google Music front.