Does this recent twin study contradict Anders Erricson's view on the hereditary basis of talent?
Ericsson’s studies have repeatedly ignored the genetics of performance in any field. His favourite study of expert performance - the London taxi driver experiment - also failed to control for prior genetic attributes that may have led these taxi drivers into their professions in the first place. A good place to start perhaps:

Hambrick et al 2014 Deliberate practice and performance in music, games, sports, education, and professions: A meta-analysis