[ Ref. https://www.youtube.com/watch?v=AvjknkyJMKI 

Hi Roland, I think the tune in the video may be "Missouri Moon,"
which was published in 1929 by the Americans Thomas Henry Lodge
and Mitchell Parish.  See my friend Bill Edwards' website here:

  http://www.perfessorbill.com/comps/tlodge.shtml 

B.A.B. included "Missouri Moon" on a 66-key roll, per Matthew
Caulfield's catalog of 165 rolls (which includes transcriptions from
the B.A.B. 66-key scale), and it seems to me that they included many
of the same tunes across different scales.  The tune from the video
is familiar to me and I am fairly certain my identification is correct,
but I can't find any recordings of "Missouri Moon" to confirm.

Whatever this tune is, I agree that it's not the popular "Missouri
Waltz."

Best to all,
TJ Fisher
Washington & Lee University
Lexington, Virginia