Good Music on Instagram: "For the iconic scene in Stranger Things season 4, Joseph Quinn actually learned to play large parts of Master of Puppets by Metallica himself. Quinn trained for months before filming so his hand movements would be accurate on screen. While the final audio was Metallica’s original recording, the performance you see is largely his own playing, which helped make the scene feel authentic. That moment became one of the most memorable scenes in the series and even sent Master