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Timeline for sharp ii dim 7th: How to use?

Current License: CC BY-SA 4.0

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Mar 28, 2021 at 17:06 comment added Richard @EdB123 Oh, interesting. In this case, that chord is best spelled with the raised fourth scale degree as root (a type of ♯iv°7 as opposed to ♯ii°7). This is enharmonic to ♯ii°7, but it's important to spell it with ♯iv as the root to show its function as a leading-tone chord resolving to V. That definitely happens, but I would say it comes after IV far more often than after ii.
Mar 28, 2021 at 17:00 comment added EdB123 thanks for such a great answer Richard. I remember reading somewhere that sharp ii dim 7 can be used as a leading note dim 7th to V. This is actually how i was planning on using it here. (sharp ii dim 7-V). Do you have any knowledge of this function?
Mar 28, 2021 at 12:44 vote accept EdB123
Mar 28, 2021 at 2:12 comment added user45266 Well, in minor, it wouldn't be enharmonically equivalent to the root of the target chord as long as the Fxdim7 chord then tonicizes some kind of G# chord instead of G. Pretty unlikely, of course.
Mar 27, 2021 at 16:42 history answered Richard CC BY-SA 4.0