Since I can’t understand most of what he’s singing, I can’t do the experiment. Sorry. 
Okay let me try them back speaks recognition software.
That was pretty good but I have to speak very clearly.
Maybe I should get a microphone or I have sent
(So that is the Mac software on a PowerBook, using it for the first time. Meh.)
You will find that a headset mike an inch or two away from your lips works a LOT better than a built-in mike a foot or two from your mouth.
Dragon might go all Whoopi Goldberg on him. “I was raised by two lesbians? Come on, Mick. Fuck a duck!” (From the movie Jumpin’ Jack Flash)