Clear Vinyl, Gatefold Sleeve. John Robert "Joe" Cocker was a British singer known for his gritty, bluesy voice and dynamic stage performances that featured expressive body movements. Most of his best-known singles, such as "Feeling Alright" and "Unchain My Heart," were recordings of songs written by other songwriters, though he composed a number of songs for most of his albums as well, often in conjunction with songwriting partner Chris Stainton.