I am the least musical person imaginable. However, the other day I came across a lovely music shop in an old building in Valladolid and came away with a "Guitalele", which is a ukulele sized instrument but with 6 strings. I will try and learn it as we travel but first I need to learn how to tune it. I understand that the G,C,E and A notes are tuned like a Uke and I think I can find out how to do this BUT, how do I tune the A and D strings? I have access to piano sounds on my ipad so a guide v.v. the piano would be much appreciated.