Ah, Lucius ...

"Guitar strings have memory. I use a tuner attached to my guitar, but I often find that halfway through a song my strings want to return to their original setting."

Thank you ... that's the kind of information, for which I seeking. I certainly know that nickelcad batteries have a memory, but I never thought about guitar strings having memory.

I can envision this occurring during a particularly difficult tune and creating performance havoc.