Sissy Spacek is an experimental grindcore and noise music project formed in 1999 by American multi-instrumentalist John Wiese. Known for their distinctive blend of high-speed blast beats and chaotic soundscapes, the group is named after the acclaimed actress. They are distinguished by their prolific output, having released over 100 recordings, including the influential works "Scissors" and "Freaked With Jet". Their music is significant in the noise and grindcore genres for its relentless intensity and unconventional approach to composition.