Small shallow cup-shaped clappers made of Bakelite, hardwood, or other hard substance. Sound is produced by striking the clappers against each other or against a mounting board, producing a high-pitched clicking or rattling sound. Used for accenting rhythm in dance organs and orchestrions.

Mellow-sounding instrument in which large felt hammers resembling oversize piano hammers strike tuned steel or aluminum bars. In theatre organ terminology: Chrysoglott.

Two ranks of pipes, of which one rank is tuned sharp or flat of the other rank. Celeste tuning, usually employed with ranks of identical tone quality, gives an added fullness or "chorus" effect to the music. Also, the same type of tuning in a music box.

Large 16′ string pipe, usually made of metal, used in the countermelody division of Mortier, Gaudin, and certain other dance organs, used for very low, deep melody and countermelody parts that would be played by a baritone saxophone in a dance band.

String pipe constructed in the manner of a violin pipe (usually with a frein or roller), but of a lower pitch than a violin pipe. Often in German orchestrion catalogs, a single rank of string pipes is described as having violin (highest treble section), viola, violoncello, and cello (lowest bass section) pipes, although violoncello and cello are synonymous from a strict usage viewpoint.