Willie Mabon was an influential American blues musician and songwriter known for his unique blend of blues, R&B, and soul. His distinctive piano and harmonica playing, along with his expressive vocals, contributed to his signature sound. Mabon gained significant popularity in the 1950s, with his most notable works being "I Don't Know" and "I'm Mad," both of which topped the R&B charts. His music has had a lasting impact on the blues genre and has influenced many artists over the years.