My experience is that this depends on the season change one is talking about. In humid periods, a bridge swelling that increases the length across the bridge evenly for all three strings, will have a greater affect on a string of overall shorter length (back length and front lengths included) because the bridge surface segment is a larger percentage of that overall length. This would mean the right string would be sharpest, and the left lowest. In dry periods.. the opposite happens. What this does not explain tho... is why pitch change happens so unevenly across the scale as a whole. Why do the lowest notes in the middle sections seem to have the largest reaction to pitch change, why does this pattern more or less reverse itself in the highest section, and why does the bass seem much less affected as a whole, but the highest notes are the ones most affected there ? I keep getting pointed back to something about the two planes (string and bridge surface) changing as a whole in relation to each other. Cheers RicB For me it seems to be the string with the shortest length from the capo bar to the tuning pin. That string tends to be sharp, while the opposite one tends to be a tiny bit flat for me.. les bartlett
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