But, Brown said later, John Lennon himself soon heard the reggae cover and helped the band sign to Apple Records, although Hot Chocolate soon moved to another label as the Beatles were splitting up.
"I never grew up wanting to be a pop star; I never grew up interested in performing music at all," Brown told Britain's Daily Telegraph in a 2009 interview as he embarked on a farewell tour.
Hot Chocolate became a rare black British act to achieve commercial success in the 1970s, and the band's danceable numbers enjoyed a spike in popularity as disco came into vogue.
The band's hits included You Sexy Thing, It Started with a Kiss, Every 1's a Winner, So You Win Again, Love is Life and Brother Louie.
Brown went solo in 1985 and achieved modest success with songs such as Personal Touch although he never achieved the same profile as he had with Hot Chocolate.
Despite winning sex symbol status with his on-stage persona and often suggestive lyrics, Brown was said to be uninterested in the rock 'n' roll lifestyle and was married for around 35 years to his wife Ginette, who survives him along with two daughters.
A line-up of Hot Chocolate, which performed in New Zealand last year, has remained touring with another singer.