The National Football League is hosting a free pop-up concert in Boston's North End today, and the performer originally promised will not be able to make it.

Originally, the NFL announced hip-hop artist Miguel would sing for attendees at Boston's Christopher Columbus Park at noon on Thursday. But on Wednesday night, the NFL announced the singer had to back out due to an illness. Rock band Guster will take stage instead.

The pop-up event serves as part of the league's new campaign called "Random Acts of Kindness," and is aimed to celebrate the new football season as well as the 2017 Super Bowl championship.

Former Patriots stars Rodney Harrison and Willie McGinest will also be in attendance, and the coveted Vince Lombardi Trophy will also be on display. Attendees will have a chance to win tickets to the 8:30 p.m. Thursday night game against the Kansas City Chiefs by registering online or checking in at the waterfront park.

Gates open at 10:30 a.m. and access is served on a first-come, first-serve basis. There is limited space for the event. Hosts will air "America's Game: 2016 New England Patriots" at 11 a.m., followed by the kickoff concert.