There is no such thing as a band freak, you must have them confused with band geeks
The group of teenagers walking through the halls singing band music in four part harmony are not band freaks, they are band geeks.
(1) A die hard fan of a high school,college or university marching band.
(2) Any marching band that has a very unorthodox style that causes controversy for the school,college or university.
(1) The Band freaks @ Stanford cause a commotion at the Stanford-Oregon football game that the University banned the band freaks in preforming in the next halftime show.
(2) I love going to field shows to see which high school band has the best band freaks.