that might make a great video, lol, but bearsy I'm mystified why, for some, soul has to be attatched to the human voice, as plaintive as it can be, certain instruments, strings, horns, guitar, piano can all resonate just as deeply. i just heard Miles Davis, 'summertime' on R2, again if thats not soul oozing from horn, what the hell is it? you'll proper think I've lost the plot now! but just listen to it, and that sound he creates makes me ache in a way that just means soul to me. otis had it, janis had it, Jimmi Hendrix and billy holliday, christ even lou reed had soul. Its not a genre for me its a feeling. and you cant attatch it to a style date or even the human voice.
https://www.youtube.com/watch?v=Oh2QN1OoXvg