Learning music theory 4-free on-the-line

1. 2019-03-27 at 2:43 AM UTC

   #1
   Phantasmagoria African Astronaut
   https://www.musictheory.net/lessons/10
   
   This is the year I finally learn the ins and outs of music making and go from zero to hero
   
   I'm going to go on to become to the greatest musician this planet has ever seen
2. 2019-03-27 at 2:45 AM UTC

   #2
   Phantasmagoria African Astronaut
   also this video is very naisu
   
   
3. 2019-03-27 at 4:18 AM UTC

   #3
   

   gadzooks Dark Matter [keratinize my mild-tasting blossoming]
   Realize that it's all mathematical ratios. Chords, chord progressions, etc.
   
   Middle C on the piano is a sine wave oscillating at 440 Hz. Every other key within that octave is proportionally higher (if C# and up) or lower (if A or B).
   
   Harmony arises from certain biologically pleasing combinations of these notes.
   
   From there it's just a matter of memorizing a finite set of chords and chord progressions.
4. 2019-03-27 at 4:21 AM UTC

   #4
   

   gadzooks Dark Matter [keratinize my mild-tasting blossoming]
   Wait a second... Middle C is 261.625565 Hz.
   
   Where dafuq did I get 440 from?
   
   I've just seen that sample sine wave a lot for some reason.
   
   One might say, rather frequently.