ORIGINAL: Joe Bravo
"in Detroit there are, and have been for over 10 years, 3 full time heavy metal/hard rock stations."
And they would be?
Here's a listing of every radio station in Detroit:
blah
blah
blah
blah
blah
blah
blah
blah
blah
blah
I don't see heavy metal listed in there. But wait, look, four jazz stations! Hooray for Detroit! 
YES! Because a list of existing radio stations is direct correlation to exposure and play. And radio exposure in turn indicates sales, right? And then those sales must in their own way prove that there is just no studio work available for those not receiving said radio play, right?
Smoke, rear orifice, you know the deal Joe.
Currently the top radio stations in the boston market WAAF and WBCN. Both are rock format. Both currently have metal programming. Granted, one station does only one hour per night, while the other has a two hour show once a week.
Meanwhile, neither station plays any Jazz. There IS a local jazz station. It's listenership is a mere fraction of either of those top two rock stations.
C'mon Joe. You told me not to go there when I mentioned numbers. Let's hear it! Substantiate your claims. I'd love to see some soundscans, myspace hits, radio playlist from top 5 networks, or any billboard top 100 lists that in ANY way prove your statements.