Time Out by the Dave Brubeck Quartet is one of the most iconic and influential jazz albums ever made. In 1959, Brubeck defied convention by experimenting with unusual time signatures, inspired by his travels through Eurasia. This resulted in a masterpiece that is both complex and surprisingly accessible. The album introduced the world to the immortal classic 'Take Five', written by saxophonist Paul Desmond. Time Out was the first jazz album to sell over a million copies, proving that adventurous music can reach a wide audience. This album is a milestone in jazz, particularly in the Cool Jazz and West Coast Jazz movements. It's defining characteristic is the groundbreaking use of time signatures such as 5/4 ('Take Five') and 9/8 ('Blue Rondo a la Turk'), which was unique at the time.