Hildebrand was born in Joshua, Texas, and Jackson in McCamey, Texas. Both were attending Howard Payne College in Brownwood, Texas in 1962 when a local disc jockey, Riney Jordan, of station KEAN, asked listeners to come to the studio and sing their songs to help the American Cancer Society. The duo sang a song called "Hey Paula," which Hildebrand wrote; the lyrics were inspired by a friend of his, Russell Berry, whose fiancée was named Paula. Jordan decided that Hildebrand and Jackson should record the song, and they did. Shelby Singleton of Philips Records eventually signed the two, but not before changing their professional name . "Hey Paula" sold over two million copies globally, and was awarded a gold disc by the Recording Industry Association of America in 1963. The pairing of Paul & Paula was credited with inspiring other famous male/female pairings down the line, mostly from record companies that had originally turned the duo down in 1962. In November 1963 Nino Tempo & April Stevens and Dale and Grace had back-to-back Hot 100 #1s. Jerry Butler was quickly paired with Betty Everett, and Marvin Gaye was paired with a number of female partners before Motown finally settled on Tammi Terrell. A revival of this duet craze started in 1977, when country music stars Kenny Rogers and Dottie West teamed up and recorded a series of big hit duets, such as "Everytime Two Fools Collide" and "Anyone Who Isn't Me Tonight." Rogers would also pair up successfully with Kim Carnes, Sheena Easton and Dolly Parton. The duo released two regular albums and a Christmas-themed album after the success of "Hey Paula", which charted at #1 on the Billboard Hot 100 for the entire month of February 1963. Their follow-up, "Young Lovers", reached #6 on the Billboard chart later in the same year. In 1963, American Bandstand signed Paul & Paula to Dick Clark's Caravan of Stars national U.S. tour which was scheduled to perform its 15th show on the night of November 22, 1963 at the Memorial Auditorium in Dallas, Texas until suddenly the Friday evening event had to be cancelled moments after U.S. President John F. Kennedy was assassinated that afternoon while touring Dallas in an open car caravan. In 1965, Hildebrand left the act to complete his college education, having decided that a future in show business was not for him. He made this decision in the middle of another Dick Clark Caravan of Stars road trip, and Clark had to fill in at the last minute. Hildebrand recorded a Christian music album in 1967 called He's Everything to Me. He became best-known among Christian music fans for his 1970s hit song "Anybody Here Wanna Live Forever?" Subsequently, Hildebrand joined up with another Christian performer, Paul Land, and during the 1980s and 1990s, they performed comedy and Christian music under the name of Land & Hildebrand. Jackson went on with a solo career, and then married a Los Angeles businessman named Marvin Landon. Since their days as a singing duo, Jill and Ray have remained friends, and well into the early 2000s, they occasionally would get together to sing as Paul & Paula for special events like oldies shows. In 2002, Hildebrand and Jackson returned to Howard Payne University in Brownwood, TX, where they were the homecoming guests of honor and Grand Marshals.