YOU'VE LOST THAT LOVIN' FEELING (The Righteous Brothers)

(From Wikipedia): "You've Lost That Lovin' Feelin'" is a 1964 song by The Righteous Brothers that became a number-one hit single in the United States and the United Kingdom the following year. In 1999, the performing-rights organization Broadcast Music, Inc. (BMI) ranked the song as having had more radio and television play in the United States than any other song during the 20th century. Additionally, the song was chosen as one of the Songs of the Century by RIAA and ranked #34 on the list of the 500 Greatest Songs of All Time by Rolling Stone.
The Righteous Brothers were the musical duo of Bill Medley and Bobby Hatfield. They recorded from 1963 through 1975 and continued to perform until Hatfield's death in 2003. Their emotive vocal stylings were sometimes dubbed "blue-eyed soul". Medley and Hatfield both possessed exceptional vocal talent, with range, control and tone that helped them create a strong and distinctive duet sound and also to perform as soloists. Medley sang the low parts with his deep, soulful baritone, with Hatfield taking the higher register vocals with his soaring countertenor. They adopted their name in 1962 while performing together in the Los Angeles area as part of a five-member group called The Paramours, which featured John Wimber (a founder of the Vineyard Movement) on keyboards. At the end of one particular performance, a U.S. Marine in the audience shouted, "That was righteous, brothers!", prompting the pair to adopt the name as they embarked on their duo career.