Keystone Music Roll Company has been manufacturing and re-issuing piano roll recordings using the original Aeolian-American perforating equipment for the past 25 years.
With time and technology marching on, Keystone has kept pace and created a system that will scan original piano roll information hole for hole, step advance by step advance, then convert that information back into the original master roll stencil information. We call it our Histograph Process.
For the first time since the heyday of the 1920's - 30's piano roll industry, have truly accurate reproductions of all piano recordings been made possible. Keystone's new Histographic rolls are the most amazingly accurate re-issued player rolls available today.