CHICAGO a cappella HISTORY OF Harmony Sunday, April 21, at 3 PM | Harris Theater for Music and Dance HARRIS THEATER Sunday, April 28, at 3 PM | McAninch Arts Center Chicago a cappella teams up with Deke Sharon, the "Father of Contemporary A Cappella" and music director of "Pitch Perfect," to bring to life the history of pop vocal harmony from the early 20th century to today. Deke Sharon, "Pitch Perfect" Tickets: www.chicagoacappella.org | 773-281-7820 CHICAGO a cappella HISTORY OF Harmony Sunday , April 21 , at 3 PM | Harris Theater for Music and Dance HARRIS THEATER Sunday , April 28 , at 3 PM | McAninch Arts Center Chicago a cappella teams up with Deke Sharon , the " Father of Contemporary A Cappella " and music director of " Pitch Perfect , " to bring to life the history of pop vocal harmony from the early 20th century to today . Deke Sharon , " Pitch Perfect " Tickets : www.chicagoacappella.org | 773-281-7820