The 1963 Walt Disney film, "Summer Magic", features songs by
the Sherman Brothers, including the evergreen, "Ugly Bug Ball".

Early in the film there is a short, lesser known song, "Flitterin'",
which is accompanied by player piano (with a discreet bass and
drums joining in after a few bars).  The children and two maids
are singing from a word roll.

The film is set in the early 1900s and the song is deliberately
evocative of the era, more like an Al Sherman song than Sherman
Brothers.  Although we have to endure the usual tempo-is-too-fast
gag, it is a charming scene, with two children taking one pedal
each (almost reminiscent of the Gulbransen ad!).

The shots of the roll are not synchronised with the music until
the words appear.  After that, it would appear that the roll, or
what we can see of it, is actually what we are listening to.  The
roll and the lettering look like QRS, and the music has an evocative
tremolo arrangement.

We could of course be listening to a couple of pianists playing in
piano-roll style, but I am quite prepared to believe that we might
be listening to a player piano.  According to one of the comments
on YouTube, the player piano used in the film is a Melville Clark
Apollophone, containing also a phonograph.

Does anyone out there know if QRS, or anyone else, actually produced
a commercial copy of this roll, or was this a one-off made just for
the film?

Incidentally, the late Robert B. Sherman, the mainly lyricist half
of the Sherman Brothers, had a Hardman Duo player piano in his study
at home (information from his son).

  https://www.youtube.com/watch?v=SDdQHo3kEzU 

Rowland Lee