David-Jubal: Difference between revisions

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{{Idiosyncratic terms|The terms ''David-Jubal tuning, David's chord, Jubal's scale'' and ''harmonic strength'' were coined by John O'Sullivan in the mid 2020s and are not so far widely known to other microtonalists.}}
{{Idiosyncratic terms|The terms ''David-Jubal tuning, David's chord, Jubal's scale, harmonic strength, David-John tuning'' and ''David-John scale'' were coined by John O'Sullivan in the mid 2020s and are not so far widely known to other microtonalists.}}


'''David-Jubal tuning''' is a musical framework invented by [[John O'Sullivan]] in the 2020s. It is a type of [[just intonation]]. It consists of the use of '''Jubal's scale''' as its pitch gamut, and '''David's chord''' as its primary sonority. (''For contrast, compare to most 21st century Western music which uses the [[12edo]] chromatic scale as its pitch gamut and the (tempered) major and minor triads as its primary sonorities'').
'''David-Jubal tuning''' is a musical framework invented by [[John O'Sullivan]] in the 2020s. It is a type of [[just intonation]]. It consists of the use of '''Jubal's scale''' as its pitch gamut, and '''David's chord''' as its primary sonority. (''For contrast, compare to most 21st century Western music which uses the [[12edo]] chromatic scale as its pitch gamut and the (tempered) major and minor triads as its primary sonorities'').
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=== David-John tuning ===
=== David-John tuning ===
'''David-John tuning''' is an analogous concept to David-Jubal tuning but using the scale '''8:9:10:11:12:13:14:15:16:18:20''' instead of Jubal's scale.
'''David-John tuning''' is an analogous concept to David-Jubal tuning but using the '''David-John scale (8:9:10:11:12:13:14:15:16:18:20)''' instead of Jubal's scale.


=== Relationship to other scales and concepts ===
=== Relationship to other scales and concepts ===
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The David-John scale is harmonic series segment 8::20, and it is a subset of [[8afdo]] (the 8th mode of the harmonic series). In fact it contains every pitch class from 8afdo at least once and sometimes twice. This makes the David-John scale an ''over-2 scale'' within [[primodality]] theory.
The David-John scale is harmonic series segment 8::20, and it is a subset of [[8afdo]] (the 8th mode of the harmonic series). In fact it contains every pitch class from 8afdo at least once and sometimes twice. This makes the David-John scale an ''over-2 scale'' within [[primodality]] theory.
Jubal's scale is a [[7-limit]] just intonation scale and the David-John scale is a [[13-limit]] just intonation scale.


== Music ==
== Music ==
=== David-Jubal tuning ===
=== David-Jubal tuning ===
; by [[John O'Sullivan]]
; by [[John O'Sullivan]]
On his YouTube channel "@johnsmusic7", O'Sullivan has compiled the following playlist of music using David-Jubal tuning:  
On his YouTube channel "@johnsmusic7", O'Sullivan has compiled the following playlist of 14 musical examples that use David-Jubal tuning:  
* https://www.youtube.com/playlist?list=PLQkrE1MMrb9g
* https://www.youtube.com/playlist?list=PLQkrE1MMrb9g


=== David-John tuning ===
=== David-John tuning ===
; by [[John O'Sullivan]]
; by [[John O'Sullivan]]
* https://youtu.be/ScI8TBk7y5E
* ''[https://youtu.be/ScI8TBk7y5E Arrival]'' (2026)
* https://youtu.be/Na-tLZL82pw
* ''[https://youtu.be/Na-tLZL82pw Elias]'' (2026)


[[Category:10-tone scales]]
[[Category:10-tone scales]]