In a recording session in 1985, David Bowie casually did a number of impressions of other singers in-between takes. Among others, he sang as Lou Reed, Bruce Springsteen, Neil Young, and Iggy Pop. These impersonations were recorded by producer Mark Saunders and were only released after Bowie’s death last year. Sanders recalls that the song Bowie sings appears to have been written quickly that day:
I think that Bowie probably wrote these lyrics quickly for the Springsteen impersonation which is first. I have no memory of us sitting around waiting for him to rewrite so it was probably done very quickly. If so, that’s pretty impressive! The imagery is definitely very Bruce.
The accompanying piece by Saunders is worth a read as well. During one of several sessions with Bowie, Mick Jagger showed up to record their Dancing in the Street cover for Live Aid; they did the whole thing, start to finish, in three hours.
The band was still working on different sections of the song, so there was a lot of stopping and starting, and it was as if Mick was wired to the sound because he could be in the middle of a serious conversation and when the band started playing he’d immediately start dancing and when the band stopped, he would, too. Not a full-blown Mick Jagger-on-stage kinda dance, but an on-the-spot dance that would enable him to continue his serious conversation. I thought this was awesome — like, he’s the real deal; music is in his blood and he just can’t even help himself!