"When Dream and Day Unite" is the debut studio album by the progressive metal band Dream Theater, released in 1989. The album features a blend of heavy metal and intricate musical compositions, showcasing the band's early sound and technical prowess. It includes tracks like "The Ytse Jam" and "A Fortune in Lies," which highlight their signature style. The album was produced by David Prater and received mixed reviews upon its release. Over time, it has gained recognition among fans of the genre, marking the beginning of Dream Theater's influential career in progressive rock and metal music.