The band is most famous for its single "Shut Up and Dance," which reached No. 4 on the Billboard Hot 100 in 2015.
Members of THON's Executive Committee and Four Diamonds addressed the media before THON began Friday afternoon.
Nine years after the original article, one of our staffers is back with an updated take on why they don't THON.
"Giving my time to help allow for kids to be kids and attend events to enjoy the beauty that THON has to offer is a magical thing."
"It's hard to find another community as selfless and passionate as the students involved in THON. Those who I have had the pleasure of working with within THON have left a lasting impact on my Penn State experience."