Presented by The Broadway League and The Times Square Alliance, the concert began at 11:30 AM.
Gifford, who is the writer (book and lyrics) of the upcoming new musical Scandalous: The Life and Trials of Aimee Semple McPherson, said in a previous statement, "I am so honored and thrilled to host this year's Broadway on Broadway concert. Over the past 20 years, Broadway on Broadway has become one of the most exciting and highly-anticipated events of the season, with amazing performances from the best that Broadway has to offer. And I'm looking forward to kicking-off a brand new theater season on September 9 with thousands of Broadway fans in Times Square!"
The event kicks off the 2012-13 Broadway season with performances from new shows and long-running favorites.
The repertoire for the free concert, which features a 30-piece orchestra, follows. Alex Lacamoire was musical director.
Bring It On: The Musical
"It's All Happening"
"My Own Best Friend"
"Never Fall in Love with an Elf"
"Mamma Mia! Medley"
"King of New York"
Motown: The Musical
Scandalous: The Life and Trials of Aimee Semple McPherson
"For Such a Time as This"
Spider-Man: Turn Off the Dark
"Boy Falls From the Sky"
"Are You There?"
The concert also included a Nederlander 100th Anniversary Celebration and a sneak peek from the second season of NBC's "Smash."
For more information visit BroadwayonBroadway.com.