During his prolific 43-year career, he has toured with such figures of soul and R&B as Kool and the Gang, Hip Huggers, O.V. Wright, Darrell Banks, and Little Royal. He recorded his first single in 1969 and is still active today. More recently, he made recordings with The Expressions, including the 2012 album Faithful Man. In 2006, he recorded the song "Jealousy" with Martin Solveig, and in 2008, the pair reunited to record I Want You.
In 2014, Fields provided additional vocals for the James Brown biopic, Get On Up.