I programmed what can be shown to be the most listened to rock station in the Western Hemisphere, and we avoided the record promoters as much as we could. On the other hand, we created deep relationships with the artists.
You did it before there was social media. Rock stars spend their time today speaking directly with their fans, not with radio. Radio stations need information their listeners can't find on the internet. For that, they depend on labels, who are usually embedded with the stars.
Among many things that we did was to do a live acoustic show at 11 AM twice a week called "Megacústicos"
That's a great idea. The way to do that in this country is set it up with the label promo person. Otherwise, the artist manager will send you a bill for an appearance fee.