A work of immaculate craft and insinuating wit, 1977’s Aja is perhaps the most fully-realised album in Steely Dan’s catalogue. Leaders Donald Fagan and Walter Becker enlisted an all-star crew of jazz/rock players to lend this album an urbane finesse and dark-tinged sparkle. This week, Ezra and Uma take a look at an enduring favourite among rock and jazz aficionados alike.