Tamio Shiraishi’s Sora is the fourth release in the Relative Pitch Solo Series, a collection featuring artists whose solo work deserves wider recognition. In the 1970s, Tamio Shiraishi was an integral member of Japanese avant-garde group Fushitsusha, which he founded alongside Keiji Haino.

Since moving to New York, Shiraishi has honed his unique approach to the alto saxophone in the city’s cavernous subway stations; Sora sees his microtonal exploration of the altissimo range on full display. The recording opens and closes with Shiraishi exploring the rich reverb of Issue Project Room's Boerum Place location, filling another echoing chamber with an ossicle-rattling sound.