https://music.stackexchange.com/help/on-topic no more than states:
music theory, notation, history, or composition
But this doesn't appear to distinguish between on- and off-topic questions. So what are the criteria for fitness? I haven't found a straightforward exposition of them, e.g. on https://music.stackexchange.com/help/dont-ask.
I'm assuming some of the following questions as on-topic; none are closed as of 2017 Dec. 24.
Some music history questions apparently are judged off-topic (like my 3 on Xenakis); but others like the following (none mine) aren't.
- Prokofiev's style,
- Training and Influences of J. S. Bach,
- https://music.stackexchange.com/questions/63091/why-was-brahmss-music-considered-too-academic?s=1|70.9273,
- What's so off about the intro to Prokofiev's Dance of the Knights?,
- Why did composers write atonally?
- What is the history of considering Rock 'n' Roll to be "the Devil's music"?
- Is Beethoven's title "Sonata quasi una Fantasia" an oxymoron, and does the title instruct how to perform it?