Koshi Inaba (稲葉浩志, Inaba Kōshi) (born September 23, 1964 in Tsuyama, Okayama) is a Japanese vocalist, multi-instrumentalist and songwriter. He is best known as the singer and lyricist of the rock duo B'z, the best-selling music act in their native Japan. He has also had a successful solo career, with five studio albums and five singles topping the Japanese music charts. He collaborated with Slash on single “Sahara” which was released in 2009. In 2017, he released a collaborative album, Chubby Groove, with Stevie Salas under the name “Inaba/Salas”.