Frippertronics: the pioneering tape-loop technique developed by Robert Fripp and Brian Eno in the early 1970s, defining the sound of ambient and experimental music. Using two modified Revox A77 reel-to-reel tape machines, the method created evolving, layered loops with infinite sustain—an organic precursor to modern looping technology. First explored on *No Pussyfooting* (1973) and *Evening Star* (1975), Frippertronics became a core element of Fripp’s solo work and King Crimson’s later soundscap