What is a surbahar?

The surbahar is a plucked, fretted, long-necked lute of Hindustani music, built as a larger, lower-pitched version of the sitar and often called the bass sitar. Museums class it as a necked bowl lute. Its core repertoire is alap, jor and jhala in the dhrupad-derived style, sometimes followed by a slow dhrupad composition with pakhawaj.