Did BBC Radio 6 Music host Mary Ann Hobbs uncover a new clue in David Bowie's Black Star?

Here's an interesting post from the BBC Radio 6 Music's Facebook page.

On air this morning (rewind on BBC Sounds), [Mary Ann Hobbs] said: "I think I might have found one of the references to 'Lazarus' which was the last single to be released during [Bowie's] lifetime.