

17 edo triads – framed in a perfect fifth are sus2 (212 cents), minor (282 cents), neutral (353 cents), major (424 cents), sus4 (494 cents) and then walked back down ending on a resolution of the sus4 – more on 17 edo

NOTE: all examples are scordatura – if you have software in 17 notes per octave and play these notes on a regular keyboard you will get these progressions.

The trade off is one of sacrificing clear notation for playability



I root -IV 2nd inversion – V 1st inversion – I root



I root -IV 2nd inversion – V7 1st inversion – I root



I 1st -IV root – V 1st – I 2nd – IV 1st – V 1st (sorry for the missed F# – should be Gb)



I 2nd -IV 1st – V7 1st inversion – I root



i root -iv 2nd inversion – V 1st inversion – i root



i root -iv 2nd inversion – V7 3rd inversion – i root



i root -iv st inversion – V7 2nd inversion – i root

every example in one file

Discussion: The above illustrates the use of 17 edo within the context of common practice as developed for 12 notes per octave tuning. 17 works acceptably in this context. Adding a seventh or using inversions tends to soften the very sharp 423 cent major thirds. In the context of a minor key with the only major third being in the V to i the sharpness becomes an asset as a leading tone.

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