“When a Man Loves a Woman” is a song written by Calvin Lewis and Andrew Wright which was recorded by Percy Sledge in 1966 at Norala Sound Studio in Sheffield, Alabama. It made number one on both the Billboard Hot 100 and R&B singles charts. It was listed 54th in the List of Rolling Stone magazine’s 500 greatest songs of all time. The sidemen for this recording included Spooner Oldham, organ; Marlin Greene, guitar; Albert “Junior” Lowe, bass and Roger Hawkins, drums. The music is built around a commonly used descending bass line chord progression as in Pachelbel’s canon, or Bach’s Air on the G string.