Hurry up! It was broadcast January 27 and will only be available to listen to for seven days after the original broadcast (so five days left as we write this).
Quoting BBC Radio 4:
Richard Coles presents a discussion series looking at collaborations between two musicians.Richard analyses the collaboration between Becker and Fagen, who formed the band Steely Dan in 1971, and the effect it had on the popular music of the time. Featuring extracts of some of the band's music, archive interviews given by Becker and Fagen and contributions from music journalist David Hepworth and Brian Sweet, author of a book about the band.
30 minutes long. Here's the link!