Born on December 16, 1933, became known as Johnny 'Hammond' Smith in the mid-50s as he emerged as an organ player to avoid confusion with the guitarist John Smith and the more famous organist Jimmy Smith.
He dropped the Smith part of his name when he signed for Kudu in 1971.
Johnny died on June 4, 1997.

(from Wikipedia):
Biography
Smith played with Paul Williams and Chris Columbo before forming his own group. His bands featured singers Etta Jones, Byrdie Green, saxophonists Houston Person, Earl Edwards, guitarists Eddie McFadden, Floyd Smith, James Clark, vibist Freddie McCoy. His career took off as he was serving as accompanist to singer Nancy Wilson. One of his last accomplishments also included Nancy Wilson. He wrote the song "Quiet Fire" for her "Nancy Now" release in 1989.

After a 10-year spell on Prestige Records throughout the 60s resulting in a series of albums, he signed for soul/R&B influenced Kudu imprint of the well-regarded CTI Records label in 1971. His first album for CTI, "Breakout" was chosen that year to launch Kudu. The album featured Grover Washington Jr. as a sideman prior to the launch of his career as a solo recording artist. Three further albums followed on Kudu, as he decided to refer to himself as "Johnny Hammond", after deciding to drop "Smith" from his name.

His style had become increasingly funky as he adapted to the style changes in music, culminating in two popular albums with the Mizell Brothers, "Gambler's Life" (1974) for the CTI offshoot, Salvation Records (US) and then in 1975, "Gears" after switching to another jazz label, Milestone Records. He began using electric and acoustic pianos, starting with "Gambler's Life", in addition to his signature instrument. Hammond's song "Shifting Gears" was featured on the breakbeat compilation Ultimate Breaks and Beats, and was also featured in the soundtrack of the 2006 video game Driver: Parallel Lines as well.

Smith also taught at the Cal Poly Pomona music department for several years, beginning in January 1987.

Hammond, Hammond J.R. Smith, J Hammond Smith, J Smith, J. Hammond, J. R. Smith, J. Smith, J.H. Smith, J.R. Smith, John Hammond, Johnny 'Hammond' Smith, Johnny "Hammond" Smith, Johnny "Hammond" Smith Quartet, Johnny “Hammond” Smith, Johnny Farfisa, Johnny Hammond (Smith), Johnny Hammond Smith, Johnny Hamond, Johnny Smith, Richard Smith, Smith