TV Themes

For years the trivia question went something like this: "What is the onlyTV show with no theme song?" The answer: 60 Minutes. OK, so what about Lost? What consitutes a song? The theme for Lost is the logo, with a key pad sweep. Is that a song? Alan Silvestri might say no. John Cage might say "sure!" In fact, Cage would probably say the tick-tock of 60 minutes is a theme song. So back to Lost. Is it a "song?"