1. Little Walter Jacobs: Little Walter is widely regarded as one of the greatest harmonica players of all time. He was known for his powerful, soulful playing style and was a major figure in the development of Chicago blues.
2. Sonny Boy Williamson (Rice Miller): Sonny Boy Williamson is another highly influential figure in the world of blues harmonica. His unique playing style, characterized by bends and slurs, has had a profound impact on many harmonica players.
3. James Cotton: James Cotton is known for his expressive playing style and his long career as a harmonica player with the Muddy Waters band.
4. Big Walter Horton: Big Walter Horton was a prominent figure in the post-war Chicago blues scene and is known for his soulful, lyrical playing style.
5. Charlie McCoy: Charlie McCoy is a versatile harmonica player who has contributed to various genres, including country, blues, and pop music.
6. Toots Thielemans: Toots Thielemans was a Belgian harmonica player who gained popularity in jazz circles and was known for his relaxed, melodic style.
7. Larry Adler: Larry Adler was a British harmonica player who popularized the instrument as a solo instrument in classical and jazz music.
8. Howard Levy: Howard Levy is known for his innovative playing techniques, blending elements of blues, jazz, and world music.
9. Magic Dick: Magic Dick is famous for his work as the harmonica player for the J. Geils Band.
10. Kim Wilson: Kim Wilson is the lead vocalist and harmonica player for the popular blues band, the Fabulous Thunderbirds.
It's important to note that this list is not exhaustive, and many other skilled harmonica players have contributed significantly to the development and popularity of the instrument.