The Breen are a fictional extraterrestrial species featured in the Star Trek science fiction franchise. They were first mentioned in "The Loss", a fourth-season episode of Star Trek: The Next Generation which first aired in 1990. References to them were made in several other Next Generation episodes, but they did not appear until the 1996 fourth season Star Trek: Deep Space Nine episode "Indiscretion". On Deep Space Nine, they played a significant role in the final story arc of the series in 1999, during which much information about them was revealed. The Breen's true appearance remained unknown to viewers until the 2024 fifth season of season Star Trek: Discovery episode Mirrors while flashing back to reveal the history of the character L’ak.

Metal Machine Music is the fifth studio album by American rock musician Lou Reed. It was recorded on a three-speed Uher machine and was mastered/engineered by Bob Ludwig. It was released as a double album in July 1975 by RCA Records, but taken off the market three weeks later. A radical departure from the rest of his catalog, the Metal Machine Music album features no songs or recognizably structured compositions, eschewing melody and rhythm for modulated feedback and noise music guitar effects, mixed at varying speeds by Reed. Also in 1975, RCA released a Quadrophonic version of the Metal Machine Music recording that was produced by playing it back both forward and backward, and by flipping the tape over.