Ōtsuzumi is not only an instrument used as a musical accompaniment to Nohgaku, Kabuki, Hōgaku and other traditional Japanese musical theater forms but also a crucial element of Japanese traditional performing arts. Its drumheads are roasted dry as preparation before every single play. Therefore, they tend to become severely worn out and torn after every use and need to be replaced after ten uses. As ōtsuzumi drumheads are an integral component of ōtsuzumi the techniques to manufacture ōtsuzumi drumheads (manufacturing nohgaku ōtsuzumi (drumheads)) are considered as important techniques to conserve cultural properties.
The Department of Intangible Cultural Heritage conducted a survey, visually documenting the techniques of making ōtsuzumi drumheads in collaboration with Mr. HATAMOTO Toru of the Hatamoto Taiko Workshop in Tokyo. The video is available online https://youtu.be/eml2A65kbtY. We recorded his entire production process, which included softening leather for drumheads and stitching the material using hemp. Mr. HATAMOTO uses his own techniques during some parts of the process, although the whole manufacturing process is based on traditional techniques. Thus, we edited some parts of the video for the public, considering the possible commercial impacts of revealing his own techniques. We also created a long version of the video documentation separately only to maintain a record of the whole process.
Various conservation techniques supporting intangible cultural heritage are faced with risks for survival due to changing social circumstances and lack of successors. We continue to conduct surveys on conservation techniques to perpetuate and protect them.