The famous Jeopardy “Think!” theme was composed by the show’s creator Merv Griffin in less than a minute as a lullaby for his son. By 2005, he had made over $70 million dollars in royalties from that song, the equivalent of a Jeopardy contestant winning every game for about a decade.
AOL Time Warner owns the copyright of “Happy birthday to you” and will do so until 2030 when the copyright expires. For this reason movies often use different songs (which are not in copyright or are owned by the studio) for birthday scenes. AOL Time Warner earns over $2 million per year from royalties for the song.