On 15 April 1923, with inventor Lee De Forest, Riesenfeld co-presented a show at the Rivoli Theater in New York City of 18 short films made in the Phonofilm sound-on-film process.
In May 1924, Max Fleischer and Dave Fleischer began producing a series of sound cartoons, called Song Car-Tunes, using the Lee DeForest Phonofilm sound-on-film process.