I have played the Nutcracker Suite rolls on Ampicos and Duo-Arts.
The version on Ampico roll is very bland, with little expression or
excitement.  The Duo-Art roll is a very symphonic and full arrangement
and is very expressive!  If the roll is not exciting on a Duo-Art
piano, the rebuilding or adjustment is lacking.  How could any roll
played by Percy Grainger be boring!

Bill Ackman