"Crystal Ball" is the title track and second single released from Styx's Crystal Ball album. It was written by guitarist Tommy Shaw who had just recently joined the band. A live version from 1979 was included on the soundtrack for the 1980 film Roadie. The live version is also available on a Japan-only Styx compilation released in 1981 on LP and on CD in 1986.

• Tommy Shaw - lead vocals, acoustic and electric lead guitar
• Dennis DeYoung - keyboards, backing vocals
• James Young - electric rhythm guitar, backing vocals
• Chuck Panozzo - bass
• John Panozzo - drums

• https://www.discogs.com/release/3561133-Styx-Reppoo-%E7%83%88%E9%A2%A8