Musical form

• "Form is a theatrical event of a certain length, and the length itself may be unpredictable."
  • Christian Wolff, quoted in Aspects of 20th Century Music, ISBN 0130493465

• "There is an idea, the basis of an internal structure, expanded and split into different shapes or groups of sound constantly changing in shape, direction, and speed, attracted and repulsed by various forces. The form of the work is a consequence of this interaction. Possible musical forms are as limitless as the exterior forms of crystals."
  • Edgard Varese, quoted in Aspects of 20th Century Music, ISBN 0130493465