NJ piano dealer, piano lessons in NJ, pianos New Jersey, NJ piano. Worldwide Piano store is a NJ piano dealer carrying a great selection of new pianos and used pianos by world-famous manufacturers including Bechstein, Hallet Davis & Co., J. Strauss & Son, Charles R. Walter, Knabe, Yamaha, Steinway and many more in hundreds of sizes, styles and colors. On-site pianos lessons are available.