If you're interested in business and music, several jobs:
Promoter - a group of bands, single band, record promoter;
Business Manager for a band or bands;
Music Business Reporter - all bands want exposure and recognition, especially the ones just starting out and need to create a following. Parlay business savvy and reporting;
Concert promoter;
Video manager/promoter - all bands need vids.
On Craig's List and in these forums I've read a lot about bands getting screwed out of fair wages by unfair club owners, "managers" who take more than their fair percentage, etc. If you could present yourself as an honest and fair manager or promoter who treats clients good, then you'll have bands knocking on your door to manage and promote them. At the end of the day, the music is nice but it's still a business...and buisnesses have to have clients and make money to stay in business.
Take college business classes if you're not already...basic marketing, accounting, finance, advertising, etc. Take a business law class to learn how business law works...how to write contracts, etc.
When you gain the reputation as being fair and honest, and good to work with, you'll have more business than you can handle.
Hope this helps.
Rogue Drummer
MBA '08