I'd like to discuss symbols used to notate diminished and half-diminished chords in Music SE. They are often notated with an open or single-crossed circle.
Sometimes it is referred to as "zero", but typically in well edited scores the symbol is round, and of size similar or just a bit smaller than letter o.
Most often the symbol is written in superscript, but it is also often written at the same height as the main chord symbol, or even in the subscript, thus I'm not sure if a strict convention exists.
I tried to gather the various variants of chord symbols used in SE, and I compiled the following list:
- C0 (zero)
- C° (degree symbol)
- Co and Cø (superscript o and ø, see https://music.meta.stackexchange.com/a/3110/63781)
- Co and Cø (regular o and ø)
- Cdim and Cm7b5 or C-7b5
I see three main aspects of the chord symbols to consider. I'd also present my opinion on each of them.
- 0 looks ugly and it doesn't have a corresponding half-diminished symbol,
- ° seems too small to me, and it doesn't have a corresponding half-diminished symbol,
- o ø displays larger than ° and seems more appropriate, though it is also a bit stretched vertically, thus not round.
- o and ø displays round and nice, but has no vertical separation from the rest of the symbol
- dim and m7b5 or -7b5 are widely used, but much less compact and thus not liked by some
Symbols typed using html codes are not displayed correctly in comments, search results and titles.
Feasibility to input
- 0 easy
- ° can be input as a unicode character (difficult for some) or html code
°(not widely known either)
- o ø require using html codes
- o ø easier to input than the above, especially the letter o
- dim and m7b5 or -7b5 easy
Feasibility to search in SE
- 0, ° and o are not synonymous in SE search
- superscript symbols can be found by SE search the same as regular ones
- html symbols typed in search window don't work
- In general searching the chord symbols is difficult, as searching for e.g.
dimwill return articles including
A dimbut not
- As various conventions are used by various people around the world, they might be searching for various versions of symbols
I presented you with 5 bad choices. I have three questions:
- Is there a strong preference for or against any of those?
- Are we confident enough about superiority of one convention over another to make edits like in this question: V→vii° or vii°→V where viio were replaced by vii°, which doesn't even seem to follow the highest voted answer in Typing musical signs!? I'd like to emphasize it is not my intention to point fingers or blame, rather to change things for better.
- What would be the steps to improve SE search system by treating some symbols as synonymous?