> My question is: is there a decent source for "M" rolls? ("M" rolls were
> used by Marquette Piano Co. for the 'Cremona' line.)

I understand that Durrell Armstrong plans a recut series by subscription
for M rolls.  He is the owner of Player Piano Co., Wichita, KS.  Now would
be a good time for you and anyone wanting M rolls to contact him and "get
on the list".  Also Gottschalk Music Co. of Champaign, IL., (whose address
& number have been listed here on the MMD before)  has a few M rolls for
sale right now.

Since you are building, effectively, a musically "universal" orchestrion/
pipe organ, why not go all the way and make it MIDI compatible?  That
way, you could also benefit from MIDI arrangers, like myself, George
Bogatko and a few others, who can not only transcribe/arrange vintage and
rare sheet music to MIDI file (using ALL your instrument's potential),
but provide you with custom original compositions as well.

The advantage here is that you are not concerned with any "originality"
factors, plus all the arrangements on rolls were "stock" commercial
arrangements and seldom utilized an instrument's full musical potential
(with the exception of certain "hand-played" pipe organ rolls by artists
who knew their organ's limits).  Arranger/composer/collectors such as
ourselves have the advantage of knowing a given instrument beforehand,
allowing music to be specifically arranged or designed for it, giving us
both an historical as well as mechanical advantage the stock roll
arrangers did not have.

Sounds like a great project!

S. K. Goodman