The "Screen Songs" are a continuation of the earlier Fleischer series "Song Car-Tunes" in color. They are sing-along shorts featuring the famous "bouncing ball", a sort of precursor to modern karaoke videos. They often featured popular melodies of the day. The early Song Car-Tunes were among the earliest sound films, produced two years before "The Jazz Singer". They were largely unknown at the time because their release was limited to the chain of 36 theaters operated by The Red Seal Pictures Company, which was equipped with the early Lee DeForest Phonofilm sound reproduction equipment. The Red Seal theater chain—formed by the Fleischers, DeForest, Edwin Miles Fadiman, and Hugo Riesenfeld—went from the East Coast to Columbus, Ohio.