Whitney Houston's signature ballad "I Will Always Love You" is only the second song to reach the Hot 100's top three in separate chart runs beginning with Dolly Parton, the song's author, in 1974. While other songs may rival its ubiquity - like Chubby Checker's "The Twist," the Righteous Brothers' "Unchained Melody" and Journey's "Don't Stop Believin'" - none has matched its 38-years chart endurance.
