Donald Fagen is an American musician and co-founder of the band Steely Dan. Known for his distinctive voice and keyboard skills, Fagen, along with his partner Walter Becker, created some of the most influential and critically acclaimed music in rock and jazz fusion. Albums like "Aja" and "The Royal Scam" are considered classics. Fagen's contributions to music as a performer and songwriter have made him a key figure in the evolution of modern music.