Now you can use National Diet Library Historical Recordings Collection.
【About Historical Recordings Collection】
To prevent loss of the sound recordings due to scatter and deterioration of 78 rpm records which are historical and cultural resources as recordings made in the early years, the Historical Records Archive Promotion Conference (HiRAC) was established in 2007. HiRAC had digitized approximately 50,000 recordings of music and speeches etc. from 78 rpms and metal discs produced from around 1900 to 1950 in Japan.