Final answer:
Multiphonics are a technique used in music to produce multiple pitches or tones simultaneously on a single instrument.
Step-by-step explanation:
Multiphonics are an example of a technique used in music. In music, multiphonics refer to the production of multiple pitches or tones simultaneously on a single instrument. It is commonly used in playing certain wind instruments, such as the saxophone or clarinet. It involves manipulation of the instrument's sound-producing mechanism to create complex tones and harmonies.