Singer had entered the home entertainment and music business several years earlier as part of its diversification process, with a line of battery-operated phonographs.

In 1973, with the imprimatur of Popular Science magazine, Project 3 released a test record to set up and calibrate 4-channel quadraphonic sound.

[4] The liner notes described the unique test disk: Light continued to direct Project 3 until his death in August 1978.

[6] In 1980, Linsky entered into licensing arrangements to release sessions by Larry Elgart and his Orchestra, Louis Armstrong, and Paul Whiteman.

[9] In September 1991, Linsky sold Project 3 to Essex Entertainment,[10] a New Jersey–based company engaged in music licensing and allied activities.