Someone notified me that the last file of vol. 3 wasn't downloading properly. I uploaded it again and it should work fine now. Thanks for telling me!
If you have any question or queries, don't hesitate to drop me am e-mail. I'll try to get back to you within 24 hours.
I am associate principal horn of the Singapore Symphony Orchestra and the author of the progressive methods. I'm happy to share my experience as a horn player and teacher with you.