I was just in a site on Youtube about how to tune your guitar(I know after forty odd years I should know how) and
this guy for demonstration purposes had the guitar lying flat on a table. He said on no circumstances should you tune your guitar this way as this was because as soon as you pick it up to play it'll be out of tune again, so you must only tune your guitar when its sitting on your knee or however you play it.
I've never heard of this and fail to see how it'd affect the tuning in this way
Anybody any comments on this one???
Hugh.