Eli5: how vinyls work

Question

How does a needle lightly rotating over grooves create a sound frequency of a specific song?

In: Other

Answer 1

Because it makes the needle vibrate, and what sound frequency *is*, is vibrations.

Also, when they talk about ‘grooves’ in a record. There’s only One groove. It’s wound around the record from the outside to the inside and the needle stays in it the whole time.