When I think of the blues, I hear the organ, bass and acoustic guitar.

St. Louis Blues

I don't know. Maybe a saxaphone.

Both WC.Handy's and Bessie Smith's music styles were Jazz for the blues. The brought blues to the world for everyone to hear and not just for the African Americans where the blues originated from!

Otis Spann has: Played himself in "I Hear the Blues" in 1963. Played himself in "Blues and Gospel Train" in 1964. Performed in "The Blues" in 1966. Played Himself - Blues Musician in "Blues Like Showers of Rain" in 1970. Played himself in "Bluesland: A Portrait in American Music" in 1993.