This might be slightly off-topic, but at least it is about music and there could be quite a few interested reading this forum.

Here's a excerpt from the OMAS homepage:
"OMAS is a research project in developmental music psychology. We are looking for musicians with a very good musical ear to fill in the OMAS questionnaire. The aims of the questionnaire are:

* to help us understand the origins of musical aural skills, and on this basis
* to develop better ways of teaching musical aural skills"

So if you think you "qualify", you can help their research at