Steely Dan - The Second Arrangement; cassette tape of original recordings presumed lost for 40 years

This tape was originally owned by recording engineer Roger Nichols and recently played and released by his daughter Cimcie. Infamously, an original mix of “The Second Arrangement” was accidentally erased by a studio worker and re-recording was ultimately abandoned despite the song having huge hit potential. This is the Holy Grail for Steely Dan fans.