Pianist breaking many strings

[Music Man]

Hi all. I have a client who is a professional pianist. He apparently plays quite forcefully. He seems to break one or two treble strings per month on average, usually in the upper three octaves. He has a Boston grand, model GP 193. He says he has always had this problem, no matter what piano he plays. He is wondering if there is a specific brand of piano that would lessen this problem. Any suggestions?
Bruce Trummel
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