Flemming Rasmussen is one of those behind-the-glass names I keep spotting like a quality stamp: a Danish producer and sound engineer, and the founder of Sweet Silence Studios in Copenhagen. His timeline reads like a metal history syllabus I actually want to study: Rainbow (1981), then Metallica (1984–1988: Ride the Lightning, Master of Puppets, ...And Justice for All), followed by Artillery (1990), Morbid Angel (1993), Blind Guardian (1995–1998), Ensiferum (2003–2004), and Evile (2007). He even won a Grammy for producing Metallica’s "One" (1989), which is kind of hilarious when you remember that song is basically anxiety with military boots on.