A question

[Arya Marafie]

Dear Sir/Madam,

I am a house music DJ and producer from London.

I am wondering if you make (or know of) a program that can recognize 
the musical key of a piece of music. I am basically looking for 
software that will allow me to import a house music track (ideally as 
an audio file) and will analyze the musical structure of the track and 
indicate the musical key (or keys).

If you can help it would be much appreciated.

Regards,

Arya Marafie