Elevator to the Gallows by Louis Malle (France, 1958, 88 min.). 

Part New Wave and part film noir, this cool thriller stars Jeanne Moreau and Maurice Ronet as lovers whose perfect crime begins to unravel when Ronet is trapped in an elevator. The film features a legendary score by Miles Davis, who improvised and recorded it in real time while watching the film (check out one of the recording sessions). The result was a perfectly suited soundtrack that jazz critic Phil Johnson called “the loneliest trumpet sound you will ever hear.”

Watch the trailer