RE_P has been played on NTS in shows including Hustlekat, featured first on 10 April 2018. Songs played include Symmetry Between Observers.

Re, a romanization of the Japanese kana れ and レ. P, a complexity class in computational complexity theory. Rê, the ancient Egyptian god Ra. P, the symbol for momentum in physics. Re, the relative effectiveness factor, a measurement of an explosive's power. P”, a primitive programming language.