26/26 I agree. It is much more difficult to tell which note played, in each clip, is out of pitch if you have no frame of reference. Having heard a version of

26/26 I agree. It is much more difficult to tell which note played, in each clip, is out of pitch if you have no frame of reference. Having heard a version of the sound clip goes a long way in this test. This is a pitch test. IE: If I play middle C for you, then play a flat or sharp version, you should be able to identify the difference. Asking people who have never heard middle C to identify middle C doesn't make the test relevant.