Chicago VII is the sixth studio album by American rock band Chicago and was released in 1974. It is notable for being their first double album of new material since 1971's Chicago III, and remains their final studio release in that format.
While touring in support of Chicago VI in 1973, the band began getting restless and started integrating some lengthy jazz instrumentals into their sets. While audiences were somewhat mixed in their reaction, Chicago greatly enjoyed the experience and decided, after years of talking about it, to record a pure jazz-influenced album, and headed straight to producer James William Guercio's Caribou Ranch studios to cut their ambitious new album.
While the sessions started off well, there was soon dissension within the group about the jazz project, with, reportedly, Peter Cetera and Guercio both leery at the commercial risk of such an undertaking. While the band reasoned that some of the jazzy material was too good to throw away, the others finally relented to including the more pop and rock-oriented songs that the band had composed in the meantime. Almost by accident, Chicago had another double album on their hands.