The term 'Mandolin Cousin' refers to two stringed instruments, the LUTE and the ukulele. The LUTE is a plucked string instrument with a neck and a deep round back, and is usually played with a plectrum. It has four strings and is often used in classical music. The ukulele is a small, four-stringed instrument of Hawaiian origin that is typically strummed with the fingers. It is often used in popular music and is known for its bright, cheerful sound. Both instruments are related to the mandolin, which is a small, four-stringed instrument of Italian origin.