* Harmonica: The harmonica is another common instrument in blues music, and is often used to accompany the guitar. Harmonicas are small, handheld instruments that are played by blowing and drawing air through them, and can produce a wide variety of sounds.
* Piano: The piano is a versatile instrument that is used in many different genres of music, including blues. In blues music, the piano is often used to provide a rhythmic foundation and to accompany the guitar and harmonica.
* Drums: Drums are used in blues music to provide rhythm and percussion. Blues drums are typically played with a simple beat, with a focus on the bass drum and snare drum.
* Bass: The bass is a low-pitched instrument that is used to provide a harmonic foundation for the other instruments in a blues band. Blues basses are typically played with a walking bass line, which is a repetitive pattern of notes that moves up and down the scale.