Answer:
band community
Explanation:
A band community is an association of amateur musicians from a specific region who perform at certain times of the year, or during certain events in support of a particular cause. These musicians can be volunteers or not, in addition, this type of band can be financed by local governments, or be created without any type of funding.
An example of this can be seen in the question above where many University of Florida students, fans, and others view themselves part of "Gator Nation," the name of the band community given to supporters of the University of Florida's educational and athletic programs.