Aja (/ˈeɪʒə/, pronounced like Asia) is the sixth album by the jazz rock band Steely Dan. Originally released in 1977 on ABC Records, it became the group's best-selling album. Peaking at No. 3 on the U.S. charts and No. 5 in the United Kingdom, it was the band's first platinum album, eventually selling over 5 million copies. In July 1978, the album won the Grammy Award for Best Engineered Non-Classical Recording. In 2003, the album was ranked number 145 on Rolling Stone's "The 500 Greatest Albums of All Time" list. It is widely regarded as a good test recording for audiophiles because of its high production standards.