Camille and Kennerly Kitt are the Harp Twins. They're classically trained on the harp, but prefer to rock out with their own arrangements of hard rock and metal tunes. They're fav song to perform is Iron Maiden's Fear of the Dark, and have some mean Metallica, Zeppelin, Stones, and pop culture tunes.
They were super nice, and very humble. They're from Chicago, but this was their third visit to NL which is pretty rad in itself.
Check out their Youtube channel