Mine (Zimbabwean 🇿🇼) is the mbira.
For a feel of the sound: https://youtu.be/R5RMYh-n3LU
Jah Prayzah the guy singing is a renowned musician.
They seem to be using the mbira in modernized covers, but the metal pestle order seem the same as the more traditional looking ones.
P/S I’m not self promoting the YouTube link. It just shows how the mbira sounds unedited.
I’m not Korean, but I’ve lived here for twenty years. Gayageum is probably the most famous Korean instrument, but I’m partial to the haegeum. https://m.youtube.com/watch?v=OfsFoUell4Y&pp=ygUSaGFlZ2V1bSBpbnN0cnVtZW50