I did that 24x7 for about 5 days (loved ones wanted me killed ;-) ). Then, with the same setup, I ran a mix CD with lots of different types of music (percussion oriented, classical, 80's synth pop dance mixes etc.) for another 2 - 3 days.
The end results were good and I would agree with Robert's approximate numerical breakdown, maybe even a bit better, say 90+% near full musicality. The "rest" just took elapsed time, albeit enjoyable time!