Someone who is unbelievably fun, musically talented, and willing to do what they like; despite what the rest of our Abercrombie-brainwashed world thinks. Band Geeks are quite possibly the most amazing people there are. They have all the fun.
Person 1: Wow that girl with the flute looks like she's having fun!
Person 2: Yeah that's Jessica, she's such a band geek. Lucky.