Revolutionary

What works best for me is to sing along with keertan. Try singing along in a Rehnsabhai, you won't be heard because of the sangat, so dont worry about losing-your-voice scenario.

Singing kirtan loudly, or even doing paath quite loud, helps tune and train your vocal cords. I'm speaking from personal experience

Well, there are 3 ways in interpretting that one man:

a) Hes mad

b) Hes trying to disturb sangat

c) He's high on Naam

My guess is as good as yours.