Claude earned certification with the Piano Technicians Guild (PTG) (www.ptg.org) in 1977 and is one of some 2000 Registered Piano Technicians in the PTG. A Registered Piano Technician (RPT) must demonstrate knowledge and skill in piano service by passing a series of three exams. These exams test general knowledge, tuning, regulating both vertical and grand actions, and various repairs.

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