Ultra-high quality SACD/CD hybrid disc was born, utilizing half-inch analog masters.The original recording was done digitally in June 2018 at Pony Canyon Yoyogi Studios in Yoyogi, Tokyo, using a Pyramix DAW at 384 kHz 32-bit, but for the production of this album, the digital source was converted to a half-inch analog source on a Studer A820, from which the audio data for the DSD layer and CD layer was newly created.