Song hails from the Mycogen sector on Trantor’s Level 88. She was part of a religion known as The Inheritance, a sect that worshipped robots. Their faith was illegal and thought to be extinct.
In 12,392 Era Imperial, Song was a member of the Gossamer Court. For sixth months, she was the chosen courtesan for Cleon24 who had abdicated his responsibilities as Emperor. She spent her days with Day, supplying him with drugs and living with him on the grounds of the Imperial Palace. Unlike other courtesans, Song retained her memories of her time with Day. This did not sit well with Dusk, who reminded Day that courtesans had their memories erased for a reason, to protect state secrets.
As Day planned their escape from the Palace, Song questioned when he seemed to be so scared of Demerzel. Day revealed the truth to her that Demerzel was the last robot alive in the galaxy. When Demerzel came to fetch Day for a matter of state, Song made a blessing towards her that she recognised. While Day was absent, Demerzel arranged for Song to be removed from the palace, her memory erased, and returned to Mycogen.
Since then, she and Oceanglass-49 have become life partners.