Calvin Leavy was an American blues and gospel singer and guitarist, known for his distinctive crossover style that blended the two genres. He gained prominence in the 1970s with his hit single "Cummins Prison Farm," which was the first record to ever chart on both the Billboard Blues and Gospel charts simultaneously. Despite facing personal and legal challenges, Leavy's music made a significant impact, particularly in the Southern Blues scene. His soulful voice and emotive guitar playing have left a lasting legacy in the world of blues and gospel music.