Lines a Whole Step & Major 3rd Apart, 4 Lines per Octave
From the Guided Tour: In these systems the lines are either a whole step or a major third apart. The bold lines help the eye discriminate between different lines, facilitating pitch identification. An alternating 6-6 notehead 'color' (hollow or solid noteheads) makes it even easier to differentiate between pitches. See the Using Notehead Color for Pitch for more about this strategy and how it affects rhythmic notation.
Isomorph Notation by Tadeusz Wojcik (1952)
DA Notation by Rich Reed (1986)Isomorph Notation by Tadeusz Wójcik
A heavy line represents D. Three ordinary staff lines represent the group of three black keys on the piano (F#, G# and A#). The distance between the D line and the group of three lines is twice the distance between adjacent lines in the group of three. Black noteheads are used for the whole-note scale that includes the lines, and white noteheads for the other whole-tone scale. The rhythmic notation is proportional. The line pattern and rhythmic notation make it resemble a horizontal 6-6 version of Klavar notation. As in Klavar, the noteheads are actually circular (not oval as depicted here), and white and black noteheads are always placed on opposite sides of the stem.
Earliest documentation: 1952
Source: Directory of Music Notation Proposals, section/page: 10/35, 11/2, 13/103
Similar notations: Klavar, Mirck Version, 6-6 Klavar by Cornelis Pot
Miscellaneous examples: Major Scale Comparison Triad Comparison Jazz Chords Comparison
Manuscript paper: Discontinuous Staves Continuous Staves Piano Staves
DA Notation by Rich Reed
This staff is basically identical to Isomorph (above) and it uses the same alternating notehead color. The pitches are different with the heavy bottom and top lines representing C. Also, the rhythmic notation is mostly traditional rather than proportional. Rich Reed's design was his modification of Wojcik's design.
Earliest documentation: 1986
Source: Directory of Music Notation Proposals, section/page: 10/23, 11/2, 13/70
Similar Notations: Untitled by Arnold Schoenberg
Manuscript Paper: Discontinuous Staves Continuous Staves
