Gordon in the morning: It's just like the 1960s, except the 2010s jarring note

Gordon's story about Paul McCartney's invovlement in the next series of Mad Men is a little confused.

First, he's writing music:

Paul McCartney writes for hit telly series

But then, he's not actually writing, just licensing tracks:

The show's producers felt his new album mainly of American classics, Kisses On The Bottom, would be perfect for the show and moved swiftly to sign a deal.

But even that makes no sense - why would a series that pays attention to period detail the way Sun photographers pay attention to the cast of The Only Way Is Essex want Macca's new stuff? If you're trying to give a feel of the 1960s, how does McCartney's frankly-not-very-good collection of karaoke-filtered mostly 1930s stuff fit in?