Horizontal

Horizontal is the fourth studio album by the Bee Gees, and their second album to receive an international release. The LP was released in early 1968, and included the international hit singles "Massachusetts" and "World". On 5 February 2007, Reprise Records reissued Horizontal with both stereo and mono mixes on one disc and a bonus disc of unreleased songs, non-album tracks, and alternate takes. The album was released in Polydor in many countries and on Atco only in the US and Canada. "And the Sun Will Shine" (backed by "Really and Sincerely") was released as a single only in France. The influences displayed on the album range from the Beatles to baroque pop.
Background
Around July 1967, the Gibb brothers sang backup vocals on Johnny Young's cover version of "Craise Finton Kirk Royal Academy of Arts" from Bee Gees' 1st, released as a single the following month. Also in July 1967, the Gibb brothers sang backup vocals on Oscar's cover version of "Holiday", with an orchestral arrangement by Bill Shepherd. Around July or August, Barry and Robin wrote "Cowman, Milk Your Cow", which was recorded by Adam Faith, with the Gibb brothers on background vocals, Russ Ballard and Pete Salt on guitars (though one source would suggest the latter was in fact Fleetwood Mac's Peter Green), Milt Rogan on bass and Bob Henrit on drums.