Matthew Caulfield wrote in 080311 MMDigest:

> The organ will be playing MIDI files rather than book music,
> since book music is not a practical medium on an operating ride.

This will come as a great surprise to the many showmen across the UK
and Europe still playing books on their roundabout organs!  I fully
understand the benefits of MIDI for the commercial operator, but it's
mostly just a question of having an operator with the time and skill to
manage the organ as well as the ride.  This is demonstrably practical,
if not to the taste of U.S. showmen.

Cheers,
Roger Wiegand
www.carouselorgan.com