I'm a bassist (electric) and decided to go down the jazz rabbit hole. Even though I'm currently a student at Berklee and mentored by Danny Morris, there were/are some gaps in my understanding of jazz. Bob DeBoo's courses were exactly what I needed to help fill in those gaps. His course on sounding like Paul Chambers is pretty spot on with what I was taught at Berklee. Adding to Bob DeBoo's instruction, having additional guidance and insight from Christian McBride and, the legendary, Ron Carter is immeasurable. Being able to access other courses for different instruments, and a ton of theory is invaluable in your growth as a musician. I would highly recommend Open Studio to anyone wanting to learn about jazz or music theory in general.