i was playing around with Dadgad tuning on my acoustic and thought i would put some c harp on it i dont know if it was the best choice or not but i wanted to see if i could make it fit.i think it did at some points and not at others.Is it possible to use any harp on any song?anyways i wrote the tune then when i listened to it i got to wonder what would fit with the mood of the music and i chose this not to start a controversy.I like Utube because it gives a way that anybody can put something out there.