His style amplified his emotions, clusters of sixteenth notes often played in a dark-tinged minor key that sounded both thrilling and chilling. Rush paid his rent working in a steel mill and driving a truck, among other jobs, but his music couldn’t be denied. His distinctiveness was indelibly captured on “I Can’t Quit You Baby,” his first single for Cobra Record Corp. in 1956. He cut some of his greatest tracks over the next two years with Cobra, including “My Love Will Never Die,” “Groanin’ the Blues,” “Three Times a Fool,” “Double Trouble” and “All Your Love (I Miss Loving).”...