Not a CD, but thought I might throw this idea out there. Project Playlist is a free website where you can build a play list of music of your choosing. Unfortunately, the music that you can choose is compiled from available free music online. Therefore, sometimes the quality of the recording isn't the best, the selection is sometimes limited, and added content will sometimes be removed.
Still, its free...and it doesn't require you to download anything. Most of the time I've found exactly what I'm looking for, and its of good quality. Every 3 months or so I might find a "dead" song on my play list and need to replace it with another link that is active. Its very user friendly.
On my son's Classical Playlist I've included some of MY favorites, Beethoven's Moonlight Sonata, Mozart's 4th Symphony, Bach's Toccata and Fugue in D minor, Beethoven's 5th, and a bunch more. If you can't tell, I watched Loony Toons when I was little, lol.
The site is http://www.playlist.com