Miyagi Kokyu (Japanese bowed string instrument) - For large Kokyu Long Case I believe a second shamisen (Japanese three-stringed instrument), with a 2-sun (approx. 6 cm) shorter neck, can also fit. Please check the dimensions. If the end of the nakagi (neck) is long, it may not fit in the lower compartment. Please also check the width including the tuning pegs. Key is included.