Double bass, also known as the upright bass, is a large stringed instrument commonly used in jazz, classical, and orchestral music. It's also called the contrabass, bass viol, or simply the bass. These synonyms help to differentiate the double bass from other types of bass instruments such as the electric bass guitar or the bass clarinet. In some regions, it's also referred to as the "doghouse" bass or the "bull fiddle." No matter the name, the double bass provides a rich, deep sound that adds an essential foundation to any musical ensemble.