I thought that the cherrango was the armadillo. Pick up an Inti Illmani album to get the sense of the sound. I think that I've acutally played one (a very rickety one, and it took a lot to get my rather large hands around it) but then I may be confusing it with the Quatro. I must admit that I have a borderline wierd weakness for all of those Andean instruments, particularly the samponas or pan pipes. Ah me.