John Curulewski

John J. Curulewski (October 3, 1950 – February 13, 1988) was an American musician who was one of the original members of Styx. Curulewski played guitar and sang occasional lead vocals on the band's first five studio albums, released from 1972 to 1975. He left in 1975 due to disputes between him and the band and died in 1988.