Mandocello
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The mandocello is a plucked string instrument of the mandolin family. It is larger than the mandolin, and is the baritone instrument of the mandolin family. Its eight strings are in four paired courses, with the strings in each course tuned in unison. Overall tuning of the courses is in fifths like a mandolin, but beginning on bass C (C2). It can be described as being to the mandolin what the cello is to the violin.
The Mandolin "Estudiantina" of Mayenne, France around 1900 when Mandolin orchestras were at the height of their popularity
Gibson mandolin family: mandocello is 2nd from right, front row
Lute
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A lute is any plucked string instrument with a neck and a deep round back enclosing a hollow cavity, usually with a sound hole or opening in the body. It may be either fretted or unfretted.
Ancient Egyptian tomb painting depicting players with long-necked lutes, 18th Dynasty (c. 1350 BC).
Hellenistic banquet scene from 1st century A.D., Hadda, Gandhara. Lute player with short-necked lute, far right.
Lute in Pakistan, Gandhara, probably Butkara in Swat, Kushan Period (1st century-320)