Here’s a little-known fact: The water we swallow never actually touches our vocal cords! Everything we swallow actually lands at the base of our tongue and travels around the larynx (or voice box) and down through the esophagus where all the food all goes. However the motion of human swallowing is what helps raise and tip the larynx, thus dislodging mucus and leaving us feeling fresh and clear down there in the back of our throats.
You can see why turntablists like scratching “ahhhh” and “fressssshhhh” so much — they’re structureless slabs of tuned white noise, so they’re more forgiving. Scratching a rap a cappella is another story. The words have meanings, and the pitches have a musical context. When a word falls in the wrong spot or with the wrong emphasis, it sounds much worse than a wrong note in a jazz solo, and an untrained listener is more likely to notice it.
Radio City Music Hall is such an iconic example of a high-end, large-scale venue that most musicians drool over, but I think I’d have to say that the venue I’d most like to play anywhere is actually Red Rocks in Colorado—it just looks so breathtaking and like a place people really appreciate art and open themselves to the whole experience of the show.
Avoid this by following the 3:1 rule, which stipulates that the distance between multiple mics should be at least three times the distance between the close mic and the source. For example, if you have a close mic 8″ from the sound hole of your acoustic guitar, your ambient mic should be at least 24″ away from the other mic, or the same sound source. The big change in amplitude between the two signals will mitigate the comb filtering, and you can accentuate this by angling the mics in different directions (provided it sounds good).