One of the Universities I tune for loaned out a Yamaha C7 for an outdoor concert, high noon, on a hot sunny day. The piano was not covered, no canapy--nothing. Probably set there for 3-4 hours. Last week I tuned the same piano for an indoor concert. Many of the strings (both bass and treble) have a slight "buzz" to the tone. Any experience with what's happened. This is a metalic buzz -- not like a soundboard buzz. I re-seated the strings, no change. Should I suspect the agraffes, the wire itself, the bridge pins--or the hammers? It was a nice performance piano. Any experience? Bob Simmons, RPT
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