Outstanding instructors and excellent video/sound quality. I love having the workbook material easily available as well. The only suggestion I might have is to make the courses searchable by key words, such as "accompniement" or "arpeggios". The search function as it is works great, but is a little too broad in the results returned. For example, when I search "piano guitar duet" I get back every piano and guitar course, and there's really no way to discern which, if any, focus on "piano guitar duet". The Fred Hersh "Playing In Duos" showed up, and looked promising, but he doesn't cover piano/guitar, and it's to unwieldy to go through every course looking to see if one does. I know that's really a specific search term, but with as many courses as you offer it would be helpful to be able to filter them a bit more specifically.