Slim was best known as a singer in the style of smooth easy jazz/blues, as well as his harmonica and flute playing.

Slim moved to Amsterdam, the Netherlands in 1988, returned to Los Angeles later that same year.

He started working with Junior Watson, as well as Hollywood Fats Band alumni Larry Taylor, Fred Kaplan and Richard Innes.

Recording credits included a number of solo albums as well as numerous as a guest performer, producer, engineer, arranger and songwriter.

Slim was latterly currently signed to Delta Groove, an independent record label based in Van Nuys, California.