Gulbransen Company was a musical instrument manufacturer of player pianos and home organs in the United States.
Also in the 1960s, Gulbransen released one of the earliest transistorized rhythm machines "Seeburg/Gulbransen Select-A-Rhythm",[4][5] collaborating with Seeburg Corporation.
Note that Seeburg invented a fully transistorized rhythm machine in 1964, which was patented in 1967.
[1] In 1985, Mission Bay Investments acquired the brand and produced Elka organs under the Gulbransen name.
[2] In 2002 or 2003,[7] QRS Music Technologies acquired the brand and pianos were made by Samick.