NEW YORK " The off-Broadway phenomenon "The Fantasticks" will end its record-breaking run this spring, bringing down the curtain on a show with confetti and a cardboard moon that started when Dwight D. Eisenhower was president.The musical, which features the songs "Try To Remember" and "Soon It's Gonna Rain," will close June 4, having played a total of 21,552 performances in New York City, producers said Tuesday.