We mentioned this one long ago, and it's time to mention it again: You can download for free the complete organ works of Johann Sebastian Bach. They were recorded by Dr. James Kibbie (University of Michigan) on original baroque organs in Leipzig, Germany. Feel free to start with a collection of Favorite Masterworks, or get the complete works that have been divided into 13 groups for easy download. Once you download these zip files, you will need to unzip them before playing the tracks. Enjoy, and don't miss our related post: How a Bach Canon Works. It's rather brilliant.