Peterson Electro-Musical Products, Inc. is a music-electronics company founded by Richard H. Peterson in 1948. The Peterson company introduced the first commercial handheld electronic tuner for musicians, the Model 70, in 1964, and later its models of strobe tuners became popular among touring and studio musicians such as the Grateful Dead, The Who, Pink Floyd, Frank Zappa, Jimi Hendrix, and Neil Young. Since its inception the company has also contributed notable inventions and innovations to the electronic organ, and its products are in use in many thousands of pipe organs, and hundreds of thousands of electronic organs, worldwide.