Great content, the lessons are really based on "core" of musical vocabulary, that helps to go in deepth with concepts. Also, the masters teaching on OSJ have nice personnalities and contact with audience. Also, some ideas are totally new and sounds really modern (the OpenStudio Mu for instance). Also, the variety of lessons on different instruments available. Also, the flexible tempo possibilities and scores available with soundslice. Also, the extra zoom videos (recently Adam made a session of listening and commenting some jazz album - Oscar Peterson.) Really great ideas, beside of music lessons. Also,... I am a very fan new suscriber, and learned so much so far! Thank you guys !