All of those hits listed by Madonna had her as the lead artist. And 90 per cent of them are still played and remembered to this day as classics. The world won't be recall the likes of Work, TIWYCF and Needed Me in two years, never mind 20. It's a shame as Rihanna does have classics too, but she dilutes them with her throw-everything-at-the-wall-and-see-what-sticks approach. I bet Rihanna's already released more singles in her career than Madonna has in her three decade career.