There are two categories mentioned. Josh Groban and Mozart are based on some level of "skill" where Strongest Man and Tour de france have a physiological or ge

There are two categories mentioned. Josh Groban and Mozart are based on some level of "skill" where Strongest Man and Tour de france have a physiological or genetic component. That may or may not be present within singing. As mentioned in my other response, deliberate practice and coaching are what seem to determine skill level. Also discussed in talent is overrated is the notion that deliberate practice seems to have a lifetime cumulative effect. So you probably can't catch up with a Groban or Tiger Woods simply because they have such a large cumulative head start in their fields. Genetic potential is something else entirely. It's hard to say how much of being a strong man or winning the tour de france is genetic, but likely the effect of genetics is less than we typically think. As an example in the book mentioned, they discuss the change in mile times since the four minute barrier was broken. The amount of people who can run a four minute mile now cannot be due to evolutionary changes in that brief period but is much more likely to be caused by improvements in teaching and training methods. Anyway again, I highly recommend "Talent is Overrated" by Geoff Colvin. These issues are covered in depth.