When Dream and Day Unite Demos 1987-1989 is a collection of demo recordings by Dream Theater released by Mike Portnoy under his YtseJam Records label. The CD contains pre-production demos as well as instrumental versions of the songs and songs that did not make it on to the album, or were recorded around the same time. Also included are six tracks the band recorded as a Christmas gift for their friends.

This is an extremely cool set, unfortunately marred by substantial noise and distortion on several of the bonus tracks. Tracks A1-B2 are from the legendary Ronnie Scott's Jazz Club show on January 31st, 1995, where Dream Theater played covers exclusively. Some of these tracks (plus additional studio seasonings) made it to the Change Of Seasons EP, so it's cool to compare and see what was taken out or overdubbed. On the second disc, you get, among other things, the Abbey Road medley and O Holy Night ("The Night") with Charlie Dominici, Don't Look Past Me ("Past [Into The Sun]") with John Hendricks, an acoustic version of To Live Forever possibly from James LaBrie's audition period for the band in 1990, and three Petrucci solo pieces, Indulge In Reverie, A Late Summer's Rain, and Schizophrenia. Some of the bonus tracks can be found in better quality on the When Dream And Day Unite Demos, and Subconcious, which has the acoustic version of To Live Forever (simply titled "Forever").

Я уже давно ничего особенного не жду от „Дримов“: ведь вокруг так много разнообразнейшей музыки, что мне действительно хочется „просто Dream Theater“ и ничего больше. Первые композиции не показались мне чем-то особенным, кроме безусловного мастерства музыкантов: просто типичный прог-металл-материал с некоторым налётом пауэра. До „Behind the Vail“ слушать альбом скучно. Однако меня порадовало, что материал отличается от предыдущего опуса группы яркой симфоничностью. И для меня этой большой плюс, потому что мне просто нравится классика.