Why are there 12 different notes?

16:30
Why is there no B# or E# note on the piano?

31:45
The Mathematical Problem with Music, and How to Solve It

24:55
These Illusions Fool Almost Everyone

13:29
history of the entire orchestra, I guess

24:36
Is there a better alphabet for English?

10:12
Understanding Musical Scales: Pentatonic, Diatonic, Chromatic

15:25
97% of pop is in 4/4... let’s look at the 3% that's not

18:39