The Amazon MP3 Store offers downloads of the 99 Power Classics MP3 Album for $2.99. That's the best price we could find for this 99-track, DRM-free album, released in 2011. (iTunes charges $9.99) It includes Flight of the Bumblebee, Ride of the Valkyries, The Snow Maiden: Dance of the Tumblers, and more. Amazon MP3 downloader is required.