Aja (pronounced Asia) is the sixth studio album by the jazz rock band Steely Dan. Originally released in 1977 on ABC Records, the album peaked at number three on the US charts and number five in the UK. It was the band's first platinum album and ultimately became their best-selling studio release, eventually selling over 5 million copies. In July 1978, the album won the Grammy Award for Best Engineered Non-Classical Recording and received Grammy nominations for Album of the Year and Best Pop Performance by a Duo or Group with Vocals. The credits for Aja list nearly 40 musicians, as band leaders Donald Fagen and Walter Becker pushed Steely Dan further into experimenting with different combinations of session players.

Gaucho is the seventh studio album by the American rock band Steely Dan, originally released by MCA Records. The sessions for Gaucho represent the band's typical penchant for studio perfectionism and obsessive recording technique. To record the album, the band used at least 42 different musicians, spent over a year in the studio, and far exceeded the original monetary advance given by the record label. In 1982, the album won the Grammy Award for Best Engineered Non-Classical Recording and received Grammy nominations for Album of the Year and Best Pop Performance by a Duo or Group with Vocals.