Dan.

After he politely tells you no, you should ask him a second time. When he declines again, you'll resent him and feel that he's an egotistical dick, because your years of admiration leads you to believe he owes it to you. Especially if you've ever purchased something of his before.
 
Hey guys,
I've been around but not saying much. Crazy busy doing day job crap, I switched to MAC finally a month ago!
John, I will give the song a whirl. Email me an mp3 file and I will see what I can do.