Vassar collaborated with Hunter Hayes on Vassar's hit "Just Another Day in Paradise" Monday night outside Bridgestone Arena. The crowd sang along with Vassar and Hayes during the free outdoor concert that spilled into the streets of Music City's downtown. Hayes and Vassar shared the stage with Cole Swindell, Striking Matches, Charles Kelley, Eric Paslay, Dave Barnes, Will Hoge, Chris Janson and Danielle Bradbery.

During Sunday's Off The Record event benefiting Second Harvest Food Bank of Middle Tennessee, Vassar joined celebrities, designers and musical guests for the elite event and fashion show. The runway lit up during Vassar's star-studded performance with STYX's Tommy Shaw, which included a captivating rendition of the rock hit "Blue Collar Man (Long Nights)." More than 400 guests enjoyed Vassar's performance at Sylvia Roberts' estate, best known for its appearance on ABC's "Nashville."

Vassar will cap off the week with additional #noPHILter dates while working on his latest album project, slated for release in 2016.