Charles Edward Anderson "Chuck" Berry (October 18, 1926 – March 18, 2017) was an American guitarist, singer and songwriter and one of the pioneers of rock and roll music. With songs such as "Maybellene" (1955), "Roll Over Beethoven" (1956), "Rock and Roll Music" (1957) and "Johnny B. Goode" (1958), Berry refined and developed rhythm and blues into the major elements that made rock and roll distinctive. Writing lyrics that focused on teen life and consumerism, and developing a music style that included guitar solos and showmanship, Berry was a major influence on subsequent rock music.
John Robert "Joe" Cocker, OBE (20 May 1944 – 22 December 2014) was an English singer and musician. He was known for his gritty voice, spasmodic body movement in performance, and definitive versions of popular songs.