Hello, everyone.

I've got a quick question that I started thinking about earlier today, but I couldn't see any way to make it work...

How can I record things I play on my Acoustic Guitar? I've considered filming myself playing things on it, but I'd also like to just have the option to record the sound and not have any picture (if that makes sense), so I can listen to it on my phone, when I have time.

Is there anything you can do to record Acoustic Guitars without it being overly expensive?