This music is a drone and ambient techno made using BERVATRA's own sound system. It includes a drone wielding two wireless speakers under an elevated platform, and a field-recorded sound source with stereo microphones. I attempted to create a new soundscape in stereo 2ch by mixing left and right separately moving sounds and environmental sounds. The change in direction from the up-tempo beats of the past and the sense of sound that had passed through club music to new ambient music was influenced by COVID-19, which no longer allowed for live performances or traditional studio work.