Medieval instruments included the flute, the recorder and plucked string instruments like the lute. Their instruments include guitars, bass, lute, cello, bagpipes and drums. He further categorized long lutes with a "pierced lute" and "long neck lute". The oud is regarded as a precursor to the European lute. Mandolins evolved from lute family instruments in Europe. It is in the same instrumental family as the mandolin and the lute. Some harpsichords may have a lute stop, which simulates the sound of a plucked lute. A lute stop is used to imitate the gentle sound of a plucked lute. The composition was written for a solo voice with an accompaniment, usually the lute. The second is the circular bodied plucked lute, the "yueqin". They are noted for lute and drum music. Such concerns are moot when more recent compositions for the lute are performed. The highly influential organologist Curt Sachs distinguished between the "long-necked lute" and the short-necked variety. However, the following seems to have been "generally" true of the Renaissance lute. Sachs also distinguished between the "long-necked lute" and the short-necked variety.