光束夜 (Kousokuya) is a Japanese dark psychedelic rock band. This Japanese rock outfit, founded by legendary guitarist 金子寿徳 (Jutok Kaneko) in the late 1970s, has released only a handful of recordings internationally, and scant more in their local Tokyo underground scene. Their sound has been compared to Japanese psych-rock legends 不失者 (Fushitsusha).

As recording engineer, Honda Shigeto puts in the liner notes of their Debut: "every single note was clear, it shrunk all the distance with its power."

Kaneko passed away on January 24th, 2007, but the group still remain as a duo.

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