The reason this video has not been featured on MMD is that the experts
unfortunately can tell the difference in audio sound between the real
organ and a computer soundcard representation thereof.

The poster of the video has long admitted to this, attributing some
unwanted audio (probably a private conversation or other "noise") that
ultimately prompted this unfortunate decision to start overlaying
a false audio as soon as the tune starts.

The sad thing here really is that the instrument, of course, is very
well capable of playing the tune and that -- as you clearly can _see_
in the video -- the music book is very much real and a part of the
repertoire now.

Another reason for not "correcting" this botch job of a video was given
and that is the driving distance of the young fellow who arranges these
and uploads the videos and the location of Bill Nunn's collection.

There are various videos on YouTube of both of how the "real" organ
sounds as well as other street organs really performing the same melody:

Organ to compare the sound: https://youtu.be/jZe1olbU7ZI
 

Bohemian Rhapsody on the "Kunkels": https://youtu.be/5BsrJYKYkI4
 

Musically,

Ingmar Krause
Coquitlam, British Columbia, Canada
http://www.grindorgans.com/