Keyboardist Kevin Moore will be familiar to fans of modern progressive rock through his work as a former member of Dream Theater and from his solo work under the name Chroma Key; more recently, he has worked with several other prog luminaries in the experimental supergroup O.S.I. But Ghost Book is an almost purely solo endeavor, a soundtrack album consisting of work commissioned by Turkish novelist Dogu Yucal for use in the film adaptation of his novel Havalet Kitap (or "Ghost Book"). Yucel was a longstanding fan of Moore's work in Dream Theater and had quoted some of the band's lyrics in his novel, so the pairing was natural…