[autarch]

> How can you make something sound good is the interesting part of music theory for me and I still haven't found a good intro to it!

As someone who majored in music composition, I have a very simple answer. I'd have some sort of idea in my head of what I wanted the music to sound like (or the emotion to evoke). Then I'd fiddly around for quite some time, discarding the things that didn't meet my criteria.

That's sort of a glib answer, but the fact is that no one really knows exactly why certain things evoke certain emotions, even though most composers understand various building block ideas like "odd meters like 5/8 and 7/8 generally evoke intensity and tension" or "brass chorale in a major key sounds triumphant" or "gong crescendo roll is scary". And of course, even then, we could find counter-examples for every one of those things.

Also, all music theory will tell you is why something in some piece of historical music sounded the way people expected it to sound at the time. It will definitely not tell you how to write good original music (though it may be a good guide on how to imitate past composers if that's useful for what you're trying to do).

[estefan]

> like "odd meters like 5/8 and 7/8 generally evoke intensity and tension" or "brass chorale in a major key sounds triumphant" or "gong crescendo roll is scary"

Can you recommend any books that teach these sorts of general rules, or the emotive feeling generally associated with different keys and modes?

[autarch]

AFAIK there are no such books. As for whether certain keys evoke certain emotions, that's highly debated other than "major happy, minor sad (other modes weird)".

The way I learned about how composition worked was mostly two things. One, listening to lots of music, ideally with the score in front of me so I could zoom in on some particular bit I really liked. Two, writing music and seeing how it turned out in practice.