title: Pitch axis
text: # Pitch axis
  
  Pitch axis may refer to:
  
  ## In music
  
  * Pitch axis (music), the center about which a melody is inverted
  * Pitch axis theory, a musical technique used in constructing chord progressions
  
  ## In mathematics and engineering
  
  * Aircraft principal axes, the axes of an airplane in flight
  * Yaw, pitch, and roll, a specific kind of Euler angles
  