Personnel...check out the background vocalists...
Donald Fagen: vocals, piano
Walter Becker: electric guitar, bass
Jeff Porcaro: drums, percussion
Victor Feldman: percussion
Pete Christlieb: tenor saxophone
Glenn Frey, Don Henley, Timothy B. Schmit: backing vocals
Steely Dan was big into special studio recording guests.
HULU had an interesting doc on the making of AJA, not sure if this is the same: https://www.amazon.com/Steely-Dan-Aja-Classic-Albums/dp/B07JQWS5F4
As was Jeff Porcaro.