I wanted to post this just for fun really.
This is the march 'Blaze Away' played using two GPO organs, tuned differently to each other but playing on the same track to produce a classic fairground organ.
There is also a glockenspiel and xylophone added to the same track.
(I must say this is not my arrangement! This is mearly a raw MIDI file played straight through GPO using Sibelius 4.)
I hope you enjoy this fun piece