Ars Caelum is a Japanese experimental electronic music project that has been active since 2010. The project is the brainchild of musician and producer Hiroaki Umeda, who is known for his eclectic and experimental approach to music. Ars Caelum's music is often characterized by its use of ambient textures, glitchy rhythms, and ethereal melodies. The project has released a number of albums and EPs, including "腹芸" (2022), "Ars Caelum Iv" (2021), and "Flashback Caruso (Cover)" (2020).