Alto saxophonist Earl Bostic (1913-1965) was an acknowledged technical master of his instrument, but he remains unappreciated by many jazz purists who only know him for his rhythm-and-blues hits of the late 1940s and early '50s, including the chart-topping Flamingo in 1951.
Yet Bostic's rough tone is often cited as a major influence on John Coltrane, who told Downbeat magazine in 1960 that Bostic "showed me a lot of things on my horn."
Although Bostic made some jazz recordings early in his career it wasn't until he switched to his R&B style of a simple melody backed by a strong beat that he found major commercial success. He recorded prolifically for King Records through the 1950s.
Exercise, a strong R&B tune, was on the flip side of his 1957 single She's Funny That Way. The MP3 is taken from the 45 and has a bit of distortion due to vinyl wear and tear.
The first appearance of Exercise on an album came in 1958 on the LP Invitation to Dance with Bostic.
Since the majority of the saxophonist's King recordings have been released on CD and/or as downloads a quick search should lead you to Exercise and any other Bostic tracks that might strike your fancy.
Here's the Bostic tune most people recognize.