Myfyrdod 4 is an instrumental for tenor guitar. It was originally on an acoustic tenor guitar tuned GDAE but here it is played finger style on electric tenor guitar in CGDA.
Myfyrdod is just a word I like that is one of two I’m using as generic titles (instead of Untitled 4 or whatever) for instrumentals that don’t have other names but is taken from a Welsh word meaning meditation or contemplation.