Rob Richwine at www.richwinepianotuning.com explains the difference between tuning and pitch. 213 458-2600, Piano Tuner for Los Angeles, Alhambra, Arcadia, Baldwin Park, Bell,Bellflower, Beverly Hills, Burbank, Calabasas, Canoga Park,Carson, Chatsworth, Compton,Covina, Culver City, Downy, Duarte, El Monte, El Segundo, Encino, Gardena, Glendale, Glendora, Harbor City, Hawaiian Gardens, Hawthorne, Hermosa Beach, Hollywood, Huntington Park, Inglewood, La Canada, La Crescenta, La Habra, Lakewood, La Mirada, La Puente, Lawndale, Lomita, Long Beach, Lynwood, Malibu, Manhattan Beach, Marina Del Rey, Maywood, Monrovia, Montebello, Monterey Park, Montrose, Newhall, North Hollywood, Northridge, Norwalk, Pacific Palisades, Pacoima, Palos Verdes, Paramount, Pasadena, Pico Rivera, Playa Del Rey, Redondo Beach, Reseda, Rosemead, San Fernando, San Gabriel, San Pedro, Santa Clarita, Santa Fe Springs Santa Monica, Saugus, Sierra Madre, Simi Valley, South Gate, South Pasadena, Stevenson Ranch, Sunland, Sun Valley, Tarzana, Temple City, Topanga, Torrance, Tujunga, Van Nuys, Venice, Walnut, West Covina, Whittier, Wilmington and Woodland Hills.