The Sinpung Changgu, noted throughout the country for its profound and unique timbre, is a famed percussion instrument made by Kang Shinha (aged 73 as of 2002) who has been solely engaged for 40 years in perfecting this traditional instrument. Sought by the lovers of Korean classic music incessantly, this hourglass-shaped instrument is made of paulownia wood of which inner part is dug out and the exterior is elaborated in good shape. To the right and left end, cow and dog leather are applied respectively.