Mentioned only by Irwin in a list of mixture stops, with no description other than having IX ranks. Examples Grand Mutation X, Pedal; John Wanamaker Store, Philadelphia, Pennsylvania, USA. Bibliography Irwin[1]: Cymbal. FOOTER Original site compiled by Edward L. Stauff. For educational use only. GrandMutation.html - Last updated 30 May 2000. Home Full Index
Grand Mutation X, Pedal; John Wanamaker Store, Philadelphia, Pennsylvania, USA.