National Music Publishers' Association. NACA is the official college circuit most of us have heard of. One buyer may have 15 colleges to buying for. That's why it could be very important to be involved with this organization. Great for independent record companies also.
Record companies can set up promotional tours, and generate revenue at the same time.
Agents will have an avenue to promote their acts. Only worth joining if you showcase and get a booth. Showcases are very much like auditioning to 1,000s of college activities buyers. Booths will allow you to point the perspective buyer in the direction of where you can do business. It's very difficult for many professionals to get involved because of the auditioning atmosphere the showcases present.