The Olympic broadcast consortium unveils its theme song on Thursday. Toronto composer Stephan Moccio, who wrote the instrumental, says it was inspired by the 1988 Olympics. The song has been recorded in 220 cuts of varying length and emotion, by orchestras, bands and children's choirs. It has also been turned into a full-fledged song, sung by 15-year-old phenom Nikki Yanofsky in English (dubbed I Believe) and Annie Villeneuve ( J'Imagine) in French. The following 12-second clip is what Mr. Moccio sung into a Dictaphone four years ago.