Up until a few years ago, I had been working with a former Program Director (or some fancy title, basically in charge of putting everything together, in addition to being an on-air, persona or talent) for the local University radio station. And he was a guitar player, and borderline musicologist. He wrote columns for the local paper, and was so good with his musical reviews and interviews and such (which he also did on air, and usually in studio), that they eventually asked him to add or incorporate movies into his workload as well. Even though this wasn't his forte, he did very well here too, given that he was so literate and intelligent, and had an appreciation for the classics!
But anyway, he would tell me all the time about how he'd be positioning the mics for acts that were coming through town, sometimes on the fly, while they were being interviewed and performing on campus. I guess he played in some bands previously, just locally, and that he said the biggest change that had occurred, was that say back in the 80's you had to play covers. Now, and for a while now, you've got to do originals. Even if they aren't always that great, leave a lot to be desired - or just downright stink! : )
His background or first love was in jazz guitar, and he was incredibly well versed in guitars and music. So, although I got to a chance to pick his brain quite a bit on those sort of things ("What was it like to interview B. B. King?"), I never got the chance to question any of his knowledge on this sort of stuff. And given how incredibly detail-oriented he was, and well organized (mostly everything I am not), it would've been wonderful!