Sound is produced when there is a change in air pressure. What do you think?

HOW IS SOUND PRODUCED?

A vibrating object compresses air which travels in the form of waves to your eardrum, causing it to vibrate upon collision.(Note: Sound waves are particles in motion.) Nerves in your ear detect those vibrations and perceive them as sound.

More Information

Sound, which is a series of wave fronts(high pressure) and wave valleys (low pressure), is characterized by the difference in pressure between the wave front and wave valley and the pitch is determined by the closeness between the wave fronts.

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Source: Wikipedia, Physics source

alright, here's one aspect of production of sound. There's another aspect which i'm not very sure in, the one on sound being produced via the vibration of molecules. Logically, it produces sound, because vibration will push the air molecules towards other air molecules, which is an increase in pressure(compression in the longitudinal wave profile). And when the vibrating source is moving back to it's original position, it creates a space of hollowness, which corresponds to the rarefaction in the wave profile. As such, it will not clash with the answer of sound being produced when there's a change in pressure. But still, i'll check it out with credible sources, and if my proposal's positive, i'll not post again. but i'll update you all if my proposal's negative.