Hello MMDers,  I'm trying to research tunes on a Molinari organ.
Your assistance to the following will be sincerely appreciated.

1. Was a seven-tune barrel customary?

2. Is it customary that only one of the seven tunes would be commonly
known today?

3. Did Molinari always use a printed tune card with the tune titles
typed out?

4. Would they ever have used a hand scribbled tune card?

5. Is there an efficient way of dating tune titles from the early
20th century?

6. How may one listen to such tunes?

Thank you for your assistance with any of the above.

Regards,
Angelo Rulli
St. Paul, Minnesota, USA