Besides that there is no real mystery I guess. As explained in that little story The Stones always surrounded themselves with fellow musicians for inspiration and Bobby was a longtime friend, very close with Ronnie Wood. And Bobby liked to hang around sessions and ether play music or talk about it, endlessly. I once sat in at an interview with some friends in 2011 where Bobby talked for about six hours straight! He also played us some amazingly great new music, over flat TV speakers, haha, that was never issued. They were definitely finished recordings... Shortly after came that dreadful Albarn produced LP... Here's some info of what might one day still see the light: https://www.bobbywomack.com/bio.html His daughter GinaRe hopefully has access to those great recordings of which several have slipped out on the web by the way.