I mentioned this earlier in the thread, but that track wasn't mixed in time for The Gouster or Young Americans. When creating those albums, Bowie labeled it a 'spare' (leftover) track; nor was it considered finished until Ryko mixed it for the Sound + Vision box set in 1989. EMI remastered that mix for their 2003 edition of the box but opted not to include it on the 2007 special 2-disc edition of Young Americans. So, there is your answer.
Kind of a fun groove, but clearly the vocal is a scratch take not intended to be the final performance (it sounds quite rough).