is a Japanese singer-songwriter and musician.
Ishibashi has frequently worked with Jim O'Rourke, with O'Rourke producing several of her albums and Ishibashi playing on his album Simple Songs. Together with Tatsuhisa Yamamoto they formed the band Kafka's Ibiki.
In 2016, she released the album Kouen Kyoudai, a collaboration with the Japanese noise musician Masami Akita (better known as Merzbow). She composed the music for the 2019 anime Blade of the Immortal. She has collaborated with director Ryusuke Hamaguchi on two projects: the 2021 film Drive My Car, and the 2023 film Evil Does Not Exist.
In 2025, she released Pareidolia, a collaborative album with O'Rourke.
She is currently in a relationship with American musician Jim O'Rourke. The two met when Ishibashi played flute on a Burt Bacharach covers album O'Rourke was producing. They live and work closely together, but "keep a professional distance, sending each other data files to work on rather than jamming."