Which instruments are most common in traditional blues music?

In traditional blues music, the human voice is considered the preeminent instrument, as the genre is essentially a vocal form focused on expressing raw emotion.12

Beyond the voice, the most common instruments include:

• Guitar: Historically the most iconic blues instrument, it is used both for accompaniment and as a lead instrument. Performers often use techniques like string-bending or applying a slide to mimic the sound of the human voice.12
• Harmonica: Frequently used to provide melodic responses to vocal lines, often played with a microphone in urban styles to create a distinctive, distorted sound.132
• Piano: A staple in many blues ensembles, providing both harmonic support and melodic flair.32
• Bass: Whether double bass or electric bass, this instrument provides the foundational, driving rhythm for the ensemble.32
• Drums: Essential in ensemble settings for setting the tempo and maintaining the backbeat.32

While the banjo was popular in the early development of the blues in the American South, its prominence was eventually superseded by the guitar.1