GENERALIZED MICROTONAL KEYBOARDS

The Bosanquet Keyboard - Gral Keyboards - Hanson Keyboards - Mallet Percussion Layouts - Older And Pre-Gral Keyboards - Other Keyboards And Keyboard Shapes

Comments on The Keyboard Section updated 5/2014

THE BOSANQUET KEYBOARD

• THE BOSANQUET 7-RANK KEYBOARD AFTER POOLE AND BROWN - From Xenharmonikon 1

• BOSANQUET-A BRIDGE-A DOORWAY TO DIALOG/A CLASSIFICATION OF TONAL SYSTEMS - From Xenharmonikon 2

• ON LINEAR NOTATIONS AND THE BOSANQUET KEYBOARD - From Xenharmonikon 3

• ON THE DEVELOPMENT OF INTONATIONAL SYSTEMS BY EXTENDED LINEAR MAPPING - From Xenharmonikon 3 part 2

• ON THE CONSTRUCTIONS OF HARMONIC TEMPLATES

• MEANTONE AND OTHER SCALES ASSIGNED TO THE 19-TONE CLAVICHORD - From Xenharmonikon 4, 5, and 6

Scott Hackleman's page on the 19 tone clavichord

• 17, 19 AND 22-TONE CLAVICHORD MAPPINGS

• VARIATIONS ON THE 4-7 KEYBOARD

• LETTER TO BOB MOOG

• LETTER TO BART HOPKINS*

GRAL KEYBOARDS

• GRAL KEYBOARD GUIDE

• THE GRAL SPECTRUM

• THE ALPHABET SERIES

• DIOPHANTINE TRIPLETS OF TEMPERAMENT DERIVED INTERVALS*

• DIOPHANTINE TRIPLETS OF RECURRENT DERIVED INTERVALS*

• THE COPRIME QUADRANT

• CHAINS OF 7s ON HEXAGONAL KEYBOARD

HANSON KEYBOARDS

• HANSON'S DEVELOPMENT OF A 53-TONE KEYBOARD LAYOUT - From Xenharmonikon XII

• LETTER TO HANSON

• SOME EXTENDED HANSON KEYBOARDS

• HANSON KEYBOARDS MAPPING WITH SLANT HEXAGONAL KEYS

• HANSON KEYBOARDS MAPPED TO STARR SWITCH GRID

• HANSON-MISC PAPERS 34 ET
added 8/2023

MALLET PERCUSSION LAYOUTS

• 17-TONE TUBALONG

• 22-41 MALLET DESIGNS

• HANSON MALLET KEYBOARDS

• 7+5+7+5+7=31-TONE KEYBOARD

• 12+7+12=31-TONE KEYBOARD

• GENERALIZED MARIMBA KEYBOARDS

OLDER AND PRE-GRAL KEYBOARDS

Comments on Pre-Gral Keyboard

• PATENT 3,342094. PATENTED SEPT. 19, 1967. MUSICAL INSTRUMENT KEYBOARD

• PATENT 3,012460. PATENTED DEC. 12, 1961. 31 TONE MUSICAL INSTRUMENT AND KEYBOARDS

• KEYBOARD SCHEMATA FROM THE SCALE TREE

• MULTI-KEYBOARD GRIDIRON  

OTHER KEYBOARDS AND KEYBOARD SHAPES

• LAMBDOMA LAYOUTS ON THE HEXAGONAL KEYBOARD

• VARIOUS BLANK HEXAGONAL KEYBOARD WORK SHEETS

• VARIOUS OTHER KEYSHAPES AND LAYOUTS CONSIDERED

~Comments and Questions Welcome~