[ Our readers in Europe are friendly and patient when I write to them
 [ in "schoolboy German".  It is a pleasure when MMD can help.  Adrian
 [ is 18 years old and is interested in all about barrel organs!  :)
 [ -- Robbie

Hallo Robbie, today I'll attempt again to write another question for
the MMD subscribers.

Dear MMD Readers, does anyone know a system to make a 41er Bruder band
organ play MIDI-files and cardbooks?  My friend (who owns the organ)
[has] a Midi-player and a special control system with magnets which
control the pipes.

But is there a system that can control the keyframe or tracker bar?
I heard there is a system available for player pianos which works with
CDs.  Is such system also possible for band organs?

Thank you.  Yours,

Adrian Schmidt

 [ I hope MMD can find an answer for you, Adrian.  The PowerRoll
 [ system is designed for a vacuum system, such as a Pianola.
 [ Maybe a similar device can be made for a pressure system
 [ ("keyless" organ with a tracker bar), or even to operate the
 [ brass finger keys of a key-type organ.  -- Robbie