Watch City of the Sun Jam Out at Firefly Music Festival
![Watch City of the Sun Jam Out at Firefly Music Festival](http://www.billboard.com/files/styles/promo_225/public/media/City-of-the-sun-artist-visit-june-2016-billboard-1548.jpg)
New York-bred trio City of the Sun made a pit stop at the Billboard lounge while at Firefly Festival in Dover, Delaware, this past weekend...
New York-bred trio City of the Sun made a pit stop at the Billboard lounge while at Firefly Festival in Dover, Delaware, this past weekend...