Thanks for adding the harp duet, skaltezon, and the two Clannad videos, jackhammer.
I have been trying to find more harp music that is interesting enough to share. I was hoping to discover some metal band that uses a harp, so far without success. During my searching, though, I learned about a band, Art in America, which "was the first known rock band featuring a pedal harp to appear on a major record label" and released only one record, in 1983 (
Harp - Wikipedia, the free encyclopedia). Here's an example of their music:
Art in America - "Undercover Lover" (1983)
A pretty, albeit simple, love song in which the harp is the best part, in my opinion.