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    Wow, I’d always wondered “why twelve notes” and “why are only eight of them important, and in a funny pattern”, and now I know.

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      There’s way better information out there about music theory than this article. It seems to me like the only reason this got posted is that it’s eev.ee who’s almost every post gets posted on here for reasons I cannot understand.

      A quick introduction to the physics if that’s all you’re interested in: Crash Course Physics on Music: https://www.youtube.com/watch?v=XDsk6tZX55g

      A full music theory course from Yale: https://www.youtube.com/watch?v=5_yOVARO2Oc&list=PL9LXrs9vCXK56qtyK4qcqwHrbf0em_81r

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        An article I can read in 5 minutes is a lot different than a 10 minute video or a full music theory course. I don’t think that an article has to be the absolute best authority on the subject to warrant posting to lobste.rs. I just took a look, and eev.ee posts have been submitted by a good number of different people.

        I can’t speak for anyone else, but I enjoy most of Eevee’s posts. They’re generally about something interesting, written from a perspective that I can understand, and are about things I generally don’t think about, but are at least tangentially related to things I’m interested in.

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          I think it’s because eevee writes about topics that intrigue devs who don’t go out of their way to look on the internet themselves.

          I like his honesty at the end:

          I’m going to forget all of this, throw notes around at random, and see what sounds good. Consensus seems to be that music is largely about handling contrast, just like anything else.

          If you aren’t quite as ready to give up, here’s some stuff people linked to me while I was figuring this out in real time on Twitter.

          Sounds like a little irrelevant brag or “excuse” for giving up there though (“figuring this out in real time on Twitter”).

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          C major is identical to A minor, and I don’t understand why we need both.

          No, they have the same notes but in different order. (CDEFGAB vs ABCDEFG) The tonic chord of C major is C major. The tonic chord of A minor is A minor.

          Someone linked me an example of Für Elise being played in A major, rather than the A minor it was written in. (But then, if you played it in C major… it would be the same. Right? Christ.)

          No… it would be like the A major version but 3 semitones higher.

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            Why do some have sharps and some have flats, rather than using the same scheme consistently? I have no idea.

            Before equal temperament A♯ was not the same thing as B♭ so I think it’s partly hysterical raisins, but if you have 8 or more sharps in a key signature you have to use double-sharps and with equal temperament you could instead use an enharmonic key with 7 or less flats and no double-flats, which is ‘simpler’.

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            Reminds me of http://pedrokroger.net/mfgan/ - I still plan to make it through the book, though it got VERY dense.

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              I worked through it without an instrument (which he specifically tells you not to do) and didn’t get that much out of it.

              I plan on revisiting it with https://github.com/lrq3000/hexiano/ which I believe will make a big difference. He does a good job of separating out which things are historical accidents vs which are essential, which I appreciate.

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              This YouTube video explains the A minor / C major difference well: https://youtu.be/UcviIQg_BlU

              I hope his other videos are as good as that one!

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                Side note: are we lacking in a tag for audio programming/science?

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                  Anecdotally, it’s not common enough.

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                  Isn’t that the period, not the frequency? Frequency is the inverse of period.