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Luke Bryan can really attract a crowd.  The country star's performance Friday on "Good Morning America" drew the largest audience for a summer concert series show this year. 

Fans hoping to see the singer at Rumsey Playfield in New York's Central Park began lining up early Thursday afternoon, and camped out overnight to make sure the got a seat for the free morning performance.  It also created a buzz on Twitter, with #LukeBryanOnGMA trending number one globally on Friday. 

At the show Luke performed a selection of hits and taped a scene for an episode of "Nashville," which is scheduled to air on ABC on October 1st.

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