The quality of the instruction and the content offered for jazz piano (my instrument) are all excellent. I like that OS offers a variety of 'levels' of instruction, but also that one can also take classes/courses from various levels and even learn about instruments other than one's primary instrument. I listened to some of Gregory Hutchinson's introductory drum classes to better understand the role of drums in a jazz ensemble, and to better understand what I am listening to on recordings. Similarly fascinating were the classes with Peter Martin's trio explaining how they approach playing in the group context. The classes are all deeply grounded in the history of jazz and in the recordings and concepts of the master players of the music. It will take some time for my playing to incorporate many of the teachings offered in the many classes I have enjoyed - and often gone back to review. I also feel the need to strike a balance between taking classes, and simply doing the work that can only happen when you are by yourself in the practice room with your instrument. However, I think that OS supports that balance and allows for connection to a very positive jazz community. I have just started exploring OS Pro, and am enjoying Adam's Repertoire Club, the GPS Trio, and Peter's Jazz Piano Method, plus the inspiration of Mentor Sessions. The live sessions available through OS Pro have another dimension to them which is inspirational and meaningful, and offers more opportunity for direct interaction and questions. Being from a pre-digital generation for much of my education, I am still getting used to asking questions through the "Chat" format, while still concentrating on the teaching taking place and playing my instrument, but the quality of the courses is great. I know two of the concepts that guide Open Studio - the idea of Restrictive practicing and the caveat that you "Can't Information Your Way to Jazz" have been important 'correctives' or reminders for me since my theoretical mind has been ahead of my performance capabilities for some time. Additionally, a fascination with learning has put me in a place of information overload at times, and Open Studio has helped me to sort some of that out, simplify my practice, and make some 'progress' in my playing. Such a wonderful community of people for studying jazz and sharing music!