Country group Lady Antebellum is to kick off the Good Morning America Summer Concert Series May 23 in New York, ABC announced Thursday. Also booked to headline shows during the 15-week series are Demi Lovato, Jennifer Lopez, Enrique Iglesias, Curtis "50 Cent" Jackson, Brad Paisley, Keith Urban, Luke Bryan, Jason Derulo, Kings of Leon, Paramore, Robin Thicke, Florida Georgia Line, Zedd and Afrojack. The 2014 Summer Concert Series will return for the sixth year to Rumsey Playfield in Manhattan's Central Park. The shows will take place Friday mornings during the GMA broadcast from 7-9 a.m. All concerts are free, however, tickets are required for Lopez's and Jackson's concerts.