🛡️ Certified Examination Rigor: Grigorios A. Chryssopoulos holds the Registered Piano Technician (RPT) credential from the Piano Technicians Guild. To attain this credential, the practitioner completed and passed standardized written theory, aural concert tuning, and practical grand/vertical action regulation examinations.
Vice President of the Atlanta PTG Chapter. Master piano rebuilder and technician specializing in high-end European piano regulation, restringing, and concert preparation.
Atlanta PTG Chapter Directory (my.ptg.org/atlanta/findatechnician). Record audited October 2026.