My daughter just turned me on to Tash Sultana, an impressive Australian multi-instrumentalist. Check this out. If the links don't work, search YouTube for "Tash Sultana jamming out on mandolin".

https://www.youtube.com/watch?v=YrcniR3Nusc



And for some unusual and outstanding guitar playing, check the following video from 18: 30 on. If the links don't work, search YouTube for "Tash Sultana: Tiny Desk Concert."

https://www.youtube.com/watch?v=GVDJ8O3lPBA