The last time I ever dj'd, and there's a reason why it was the last time as you'll see in a minute - I was playing Siky Hargraves, Natural Four and other well known but hardly common oldies, I was asked for Jimmy Mack (the song not the artist), Brainstorm, Because Of You and Nine Times Out Of Ten. I didn't play any of them because I hadn't got any of them "what do you mean you have't got Brainstorm" (er, nobodys played it for 35 years you moron) anyway one guy kept asking and asking for Tell Me It's Just A Rumour Baby so I eventually borrowed it off someone else - and he didn't dance. I had a very poor dance floor reaction and as I finished, the next guy put on Because Of You and rammed the floor and proceeded to play the commonest Motowns etc to a very busy dancefloor, I said never, ever again, and nowadays I just do my DJ sets via podcasts where it doesn't matter if people dance or not!