Eraserhead (1977) David Lynch

Tortured factory worker Henry Spencer, a lost cause enduring a miserable existence in an inhumane industrial wasteland, is shocked to discover that his chronically depressed girlfriend Mary has given birth to something otherworldly. But that's the least of Henry's problems. As the odd couple returns to Henry's squalid shoebox apartment, the unnatural baby's unremitting crying drives Mary crazy, threatening to destroy their fragile happiness. Sometimes, the dream of blissful fatherhood can become a nightmare. After all, poor Henry has been dealing with dread, anxiety, and increasingly bizarre visions for too long. Could that eerie earworm of a song coming from the radiator help soothe his pain?