Post-Tonal Theory: Base 12 Counting

The video tutorial explains the concept of pitch classes in music theory, highlighting the use of enharmonic equivalency and the fixed do system where pitch Class C is assigned the number 0. It discusses why numbers 0 through 11 are used instead of 1 through 12, emphasizing the mathematical reasoning behind this choice. The tutorial uses a clock face analogy to illustrate how pitch classes repeat in a cycle, similar to how hours repeat on a clock. It concludes with a brief introduction to interval classes, setting the stage for future lessons.

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