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Time Out is the 1959 album by The Dave Brubeck Quartet, based upon the use of time signatures that were unusual for jazz (mainly waltz or double-waltz time, but also 9/8, and most famously 5/4).

Although the album was intended as an experiment and received negative reviews by critics upon its release, it became one of the best-known and biggest-selling jazz albums ever. Obviously, timing is everything!