Grayslake Heritage Center & Museum issued the following announcement on April 29.
Don’t miss this musical extravaganza on Friday, May 11 at 6 pm featuring the talented performers from Grayslake North High School. Bring your picnic baskets and lawn chairs and join us at Centennial Park, at the corner of Whitney and Center Streets. The concert features Slam Funk, the school’s Motown group, as well as the Pirate Choir and Pulse a cappella.
Original source can be found here.