Perfect Fifth (3:2)

The purest interval after the octave, whose stacking generates scales — and a famous small error.

Core Principles & Analysis

• Its 3:2 ratio is the next-simplest relationship after the octave.
• Stacking twelve fifths overshoots seven octaves by the Pythagorean comma — the crack tuning systems paper over.
• Power chords in rock are bare fifths, sturdy under heavy distortion because of that simple ratio.

Specifications & Metrics

• FREQUENCY: 3:2 ratio