[dosland]

Fazool says "string metal doesn't stretch", which is all well and good. But as this is the "classical" region fo the forum, I'd suggest we're not really talking about string metal at all (?). Most of the strings on our classical-ish instruments would be some form of "plastic" which absolutely stretches - easy enough to see this happening when your metal-wound bass strings start to lose their shape - sometimes you can see the windings on older strings come apart precisely because the nylon material that actually makes up the "string" starts to stretch along its length. I'm sure one could google around a bit and find someone demonstrating how much the trebles stretch with a before and after measurement, but that's someone else's job...