Open studio is a phenomenal platform. I signed up for an upright bass course (even though I don’t own an upright bass and play electric 5 string.) Ran into some health issues recently that interrupted progress though, but can’t wait to get back to it. The information available is quite amazing and affordable (even for old retired people!) and worth it for just watching snd listening to these virtuoso musicians play so effortlessly. Only downside is the double-edge-sword effect of occasionally feeling discouraged by not being blessed with certain abilities, but that generally passes soon enough :) They have even added the ultra-incredible talent of Emmet Cohen, as if the genius of Adam and Peter Christian McBride and Bob DeBoo etc. wasn’t enough!