#1
http://www.youtube.com/watch?v=wb9YQbwfixY

problem starts at around 4:36

if you've ever been to blues jams regularly, then you know that there is always some drunk harp player who tries to come up and play uninvited. usually always with the harmonica that is in the wrong key.
http://richmusic.dmusic.com

"Those who dream by night, in the dusty recesses of their minds wake in the day to find that all was vanity; but dreamers of the day are dangerous men, for they may act their dream with open eyes, and make it possible."
#2
I can understand why he didn't want him there, but the harmonica player was hitting the right note.
#3
Knock his teeth out with the harp and make him swallow it. Every time he breathes you'll hear his harmonica. WHHEEEE...GASP.....WHHEEEEE
#5
Tell him to overblow you.
Dear God, do you actually answer prayers?

Yes, but only in a way indistinguishable from random luck or the result of your own efforts.