The American Heritage Dictionary of 1983 says:

    record (n): A written account of events or facts.
    recording (n): Something on which sound is recorded.

If one believes these definitions then a music cassette or CD
is a recording, whilst a piano roll is a record (being a 'written'
account of key commands) somewhat like sheet music.

Naturally, every new technology creates new meanings for old words,
and it may be many years before a dictionary reflects the popular
usage.  Most of my word books don't mention "recording".

An analog audio "recording" for the phonograph preserves sounds,
whereas a music roll "record" preserves the commands to generate
sounds.  The audio record reveals the sound of the artist's piano and
the acoustic effect of the studio or concert hall; the "hand played"
music roll preserves only the commands to move the piano keys -- the
sounds are created anew in your parlour !

U.S. Postal Service regulations say that audio recordings and books
and piano rolls are the same.  Well, they qualify for the same low
postage rate, that's all.  The U.S. Copyright Office lumps together
all performance media, but that's just for copyright law purposes.

I like the term used by the music industry in the heyday of the
player piano: the music roll "record".  The noun "record" plainly
differentiates the analog audio "recording" from the binary data
"record" which controls a self-playing mechanical musical instrument.
I see no reason for us to use different definitions today when we
write about self-playing instruments.

Robbie Rhodes