Dear Mark: This time of year all pianos are sharp, unless they have Dampp-Chasers with humidistats. We service hundreds of school, church and home pianos every year. The only pianos that are not sharp are the ones with Dampp-Chasers with humidistats. I can get into more detail if you want to talk. Please call 1-800-443-7509. Thanks, Steve Cunningham
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