The musician Eno is a three-letter answer to the crossword clue 'Music for Airports Musician'. Eno is the stage name of Brian Peter George St. John le Baptiste de la Salle Eno, an English musician, record producer, visual artist, and theorist best known for his pioneering work in ambient music. He released his debut solo album, 'Ambient 1: Music for Airports', in 1978, which is widely considered to be the first album of ambient music.