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Full information about the Bohlen-Pierce project is given in the article elsewhere on this site, but briefly, the Bohlen-Pierce scale is an alternative musical scale, arrived at by dividing the just twelfth (a 3:1 frequency ratio) into thirteen steps, giving extensive new musical possibilities to those involved in the creation of new music.  For the first time, instruments built to this scale are now offered for sale to musicians.
 

Soprano clarinet

The BP soprano clarinet is the same size as the conventional Bb clarinet, and is played with the same mouthpiece.  The fingering uses a combination of open finger holes and keywork derived from the Boehm system (the complete low note mechanism for the little fingers, plus a throat key for L1, a trill key and the register key).

In keeping with the futuristic nature of the BP project, the BP soprano clarinet is constructed in Delrin, a high quality synthetic material.
 
 
 

Tenor and contra clarinets

The tenor and contra clarinets are the larger sizes in the BP family.  The former is midway in size between the conventional alto and bass clarinets, and the latter is the same size as an Eb contrabass. 

The body material is metal (brass and copper).

Further details will be posted as the prototypes are field tested.
 

Metallophones

Various mallet instruments can be envisaged, to provide ready reference to the pitches of the equal tempered BP scale and for rhythmic accompaniment in performance.

The metallophone is built along the same lines as the the Orff metallophones used in schools, with metal bars and a wooden resonator box, giving a soft, sustained sound.

The range of the alto metallophone covers the middle of the range of the BP soprano clarinet, or the second register of the BP tenor clarinet (other sizes and ranges may be specified).