Cracking album, was just listening to it in the car this morning. If you like that, you might like Folkjokeopus also by Harper, to my mind his most similar album (https://en.wikipedia.org/wiki/Folkjokeopus). Or Ys by Joanna Newsom which is in a similar style and rather influenced by it (https://en.wikipedia.org/wiki/Ys_(Joanna_Newsom_album) )