The explanation of the terms listed below refer to their usage in the field of Mechanical Music. Many of the descriptions are from the book The Golden Age of Automatic Musical Instruments by MBSI member Arthur A. Reblitz, published by the Mechanical Music Press, Woodsville, New Hampshire; copyright 2001. They are used here with permission of the author and publisher. Permission is granted for writers to use a limited number of brief excerpts provided credit is given to the MBSI web site, the title of the original work and the author. Written permission is required for all other uses. German nouns and words that are also names of places are capitalized.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Z |

Jahrmarkt Orgel: German term for fairground organ.

jazz cymbal: In the Hupfeld Pan Orchestra (and possibly other orchestrions) an effect produced by a small reiterating metal rod which strikes near the edge of the crash cymbal. * German: Beckenwirble.

jazz flute pipe: In dance organs, a stopped flute pipe or chimney flute with a special tremulant, consisting of a pallet covering the outside opening of a small hole drilled in the back of the pipe, opposite the mouth. When a jazz tremolo (or vibrato) effect is desired, the pallet opens and closes rapidly while the pipe is being sounded in the normal manner. The opening and closing of the hole causes a pronounced and rapid vibrato. See vibratone (a related pipe).

jewel cap: See endstone cap.

justifying: The alignment of each pin on the cylinder of a musical box so that it plucks the tooth tip in the precise manner required for a particular song. Synonym: verifying.