Musician Adam Neely discusses the fastest music humanly possible to hear, not perform.Most individuals can distinguish inter-onset intervals of 100 ms; Morse code perception exceeds this.Morse code is comprised of dots, dashes, and varying spaces with odd timing intervals.Words per minute (wpm) is a measure of Morse code speed, with PARIS as a common standard word.Calculating inter-onset intervals based on wpm reveals the perception limit close to 100 ms.People can receive Morse code at speeds exceeding the perceived limit, with a world record of 75.2 wpm.Listening skills transition from recognizing letters to words around the 20-30 wpm range.Intelligence officers could copy encrypted text at high rates, implying advanced listening skills.The article discusses limitations and capabilities of human perception in Morse code decoding.References to historical studies and records are made to support the analysis presented.