Philippa, neither the Loughnashade nor the carynx are at all similar to a didgeridoo. they are both trumpets, played like trumpets, not hollow tubes without mouthpieces. and the bog find hollow tubes referred to by katlaughing are not at all like didgeridoos in appearance, they are curved in arcs, not straight tubes, but lack a trumpet mouthpiece (at least when found). I suppose one could add a bellows and some regulators and claim they were the prototype for uilleann pipes, but that would be just as far fetched. I don't recall any reference anywhere, in Latin or Irish mss. of any instrument that was played in any way or produced any sound like a didgeridoo. Have you? If so I would be very interested to read it. Just because some guy on a television show decides that because he can produce a didgeridoo like tone on a replica of an object found in a bog, does not mean that is how it was played or sounded by the people who produced them. I guess it doesn't mean it wasn't played that way either, but I don't think Simon O'Dwyer is on to something here. I think it is an enormous reach in speculation.