Ask an MBA Admissions Consultant

Is there a certain type of activity that I should not include in an application. For instance, as I a musician, I was involved in a rock / heavy metal band where we put out a CD and were on a small record label. We also played with many established nationally recognized artists. Because of the style and potentially having this considered a hobby, I am understandably hesitant to include this on an application despite the high level professionalism and dedication involved. Any thoughts are greatly appreciated.