I call mine Lazarus cuz when I got it a couple of the notes didn't work which makes it difficult (to say the least) to play music. So I get it ready to be returned, forgot to actually send it, later thought I remembered sending it, then found it just the other day in the box waiting for my memory to catch up. Took it out the box to show a friend and every note magically worked. Not sure what the physical explanation is since I just started playing the ol' mouth harp, but I'm sure there is one