Good one, especially for testing mids and treble since many pieces go up to 22kHz. The only flaw - not for a newbee, too much is going on sometimes. But mostly I was surprised by the second track, "Write Once, Run Melos". It pushed neutral headphones to the brightness limit. I do not suffer from bright coloration, but it was something. Also goes up to 22kHz, thus I prefer this one for serious testing.