Randy Travis’s first song post-stroke used AI

With some help from artificial intelligence, country music star Randy Travis, celebrated for his timeless hits like “Forever and Ever, Amen” and “I Told You So,” has his voice back. In July 2013, Travis was hospitalized with viral cardiomyopathy, a virus that attacks the heart, and later suffered a stroke. The Country Music Hall of Famer had to relearn how to walk, spell and read in the years that followed. A condition called aphasia limits his ability to speak—it’s why his wife Mary...