To Jeannette Sorrell—groundbreaking artistic director, conductor, and harpsichordist of the esteemed baroque orchestra Apollo’s Fire—“Vivaldi was a master of storytelling.” The group returns to where it began its now decade-spanning relationship with Ravinia on August 15, bringing a new edition of their internationally acclaimed program Vivaldi’s Four Seasons Rediscovered to the summery center of its second home in Chicago.