What are the two main styles of double bass?

* Orchestral style: This style is used in classical music and jazz. The strings are tuned in fourths (G, D, A, E). The left hand uses a variety of techniques, including finger pizzicato, arco (bowing), and double stops.

* Slap style: This style is used in jazz, blues, and country music. The strings are tuned in fifths (E, A, D, G). The left hand uses a slapping technique, while the right hand uses a plucking technique.