Reed instruments work as two coupled oscillators, reed and air column

Evidence

The coupling of oscillations and understanding their phase has many applications—for instance, we shall use it to ferret out the subtleties of reeds (cane or lips). The reed will be one oscillator, or “pendulum,” and an air column vibration is another (see the discussion of wind instruments, chapter 16). — Eric J. Heller, Why You Hear What You Hear- An…, 1038

Categorization

• XREF: The two-coupled-oscillator model for reeds pays off loudspeaker and wind-instrument theory and connects to how the ear’s basilar membrane is itself a driven oscillator system. — connects to: Air reed oscillation is driven by pressure pulse reflections at the pipe mouth — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1159