Wallet a little empty lately? Bank account a little less than zero? Want to make the sweet cash moneydollars that smooth off life's rough edges?
Write TV theme songs. If you write a TV theme song, they will play this song every time the show is ever mentioned, in a hundred different countries around the world. They will hear your song in Croatia. They will translate it into French.
And every time a young Brazilian lass hears her favorite program's opening notes, you'll get royalties. For the rest of your life. For a song that lasts no longer than one minute.