This could be like a classifieds Directory of Studios, Producers, Managers, Blogs, Radios, Playlists, Etc. That pay for a slot here. It could all be categorized and organized by state, or Region (Midwest, West Coast, Etc.)
COMPANIES/WEBSITES OF INTEREST
The Detroit Entrepreneur
For the above links, you can make an Affiliate or Referral Account with most these companies and link directly to your referral link to offer people discounts and earn money for referring people, or have a promo code typed next to each link that can be used for each site.