Paul r, you just reminded me of something similar...
Whilst in Tenerife 2 weeks back there was a bar advertising a 'Soul Singer' on tonight 'Classic Soul' was the sub headline. Me the missus and kids went in there and a black guy around 40 years old came on stage. Good voice, not bad and singing the usual tunes. Then he asked for requests and I was going to say Jackie Wilson 'Sweetest Feeling' but I thought no, that's too easy. "How about something by Chuck Jackson"? I asked, "who?" was his reply so I said "well if you don't know who he is then you're not a real Soul man"....
It was all taken in jest really but surely if you're really into Soul then you'd know who Chuck Jackson is... wouldn't you?