(You can find the discussion about the criteria we could use to allow musical analysis here: Criteria for allowed analysis of specific music)
Analysis requests of specific works (time signature, harmony, etc) are currently not allowed in Music SE. I understand why: "Questions on identifying (or finding) a particular song, genre, instrument, etc. are off-topic since they are rarely useful to future readers."
I agree with this, but I also think this not necessarily applies to all works, and that we are letting that little con completely shut down a very big and interesting pro: the harmonic, objective, analysis of well-known musical works and/or authors, that would be of the interest of a huge amount of people that would find it useful. Analysis of big songs, by big authors. (I know, what is "big", right? I think we can draw that line, bear with me)
We can either:
1) Allow the analysis of all musical works. No exceptions. We will get some questions with a very low interest amount, but what's the worst that could happen? Some questions not being answered? I think that's a very low "price" to pay for opening the possibility of analysis of works and/or composers that carry a lot of interest, that have the potential to generate great questions and answers.
The analysis of less-known works will always carry the potential of being useful to someone else anyway.
2) Allow the analysis of some musical works, based in a criteria set by the community. If we think opening the valve completely is not a good idea, maybe we can open it just a little. We can set some rules. Here are some examples:
Create a community question once a week (or month, or every two days, or whatever) about the analysis of a specific work or author. We can vote and discuss the specifics of the question (which work, which author, etc).
Allow analysis requests from only selected authors and/or eras and/or any other filter. Maybe allow common practice works only, or maybe only from specific authors, or whatever you can think of. Again, we can set and discuss the specifics here, in the meta.
Allow analysis requests only from users above X reputation (I know this is out of pattern with other SE sites, but it might not be a bad idea to implement it on this scenario).
This type of question will likely end up being on topic in the Music Fan SE Proposal, which is close to reach the commitment stage. I think it makes much more sense to have them here.
What do you think?