WATCH: Singing Cops Perform At Brad Paisley Xfinity Center Show

MANSFIELD, MA — The two members of the Boston Police Department whose rendition of "God Bless America" just before the Fourth of July went viral had a chance to perform in front of a large Xfinity Center crowd Saturday night.

Country star Brad Paisley made good on his promise to have Officers Stephen McNulty and Kim Tavares perform at his concert, giving the two a chance to sing the song that made them known across the country.

The police video which made the two officers a hit is a parody of James Corden's "Car Pool Karaoke," but more a'cappella than karaoke. In it, Officers McNulty and Tavares, both members of the department's media relations team, chat about Boston's July 4 celebration before belting out "God Bless America."

Both of the officers have sung the National Anthem and other patriotic songs at police events throughout the years, and at Fenway Park and the Fleetwood Center but never had the chance to actually sing together until their supervisor put them up to the video, they told Patch previously.

Below are Officers McNulty and Tavares at Saturday's concert in Mansfield:

Reporting from Jenna Fisher was used in this story.

Image via YouTube