Doug Woods at the Sound Test Room YouTube channel made a quick video demo using Teüna to tune a guitar (boring) and four wine glasses (a great parlor trick).

Now Doug, having a lovely British accent and several years living in Spain, has quite missed my intended faux-European pronunciation of Teüna, which is supposed to sound very much like the way he normally says “tuner”. But it’s a great chance to see Teüna in action.