This man's acapella 'Mike Tyson's Punch-Out!!' theme is acamazing It's a one-man acapella version of the fight theme from NES' 'Mike Tyson's Punch-Out!!' Getting his head in the game: McGroove covers "Punch-Out!!" Mar 5, 2014 at 5:59p ET A YouTube user by the name of "Smooth McGroove" has recently uploaded his acapella version of the fight theme from the NES video game "Mike Tyson's Punch-Out!!" McGroove's even provided video showing himself voicing all the parts, "Brady Bunch" style, in case you didn't believe him: "Punch-Out!!" is just the latest of 80 old-school video game theme songs the Oklahoma-based McGroove has covered. Check out this one from "Street Fighter 2." And here's the vocal stylist's take on "Mario World." H/t to Bleacher Report for the post.