With all the amazing things that you can search on Google, you can now add music to that list. You don't have to do anything special to access this feature. All you have to do is enter your favorite album, group, or artist; then if Google recognize it the request will appear in the search results.
For example, you can try searching for the Beatles, or Sting. The Google search results will generally show some information about that artist, like cover art, reviews, and links to stores where you can purchase the CD or download the music.
Most of the music information is from the U.S. right now, but in the future Google plans on including artist from different countries. Google also plans on expanding how you can download and purchase the music.