ST. PAUL, Minn. - Original Kiss members Gene Simmons and Ace Frehley have reunited for their first public appearance since their group was inducted into the Rock and Roll Hall of Fame in 2014.

SEPTEMBER 20: Ace Frehley at The Children Matter Benefit Concert Featuring Gene Simmons, Ace Frehley, Don Felder And Cheap Trick at CHS Field Stadium in St Paul, MN (Photo by Hannah Foslien/Getty Images for The Children Matter)

But unlike that terse ceremony, the Star Tribune reports, they came to St. Paul's CHS field to play Wednesday night in their first show together in 16 years.

SEPTEMBER 20: (L-R) Philip Shouse, Ace Frehley, Gene Simmons, Ryan Cook and Jeremy Asbrock perform at The Children Matter Benefit Concert at CHS Field Stadium in St Paul, MN. (Photo by Hannah Foslien/Getty Images for The Children Matter)

The event was a hurricane relief benefit that Simmons helped organize for the Minnesota-based charity Matter.ngo. The nonprofit focuses on feeding and aiding children worldwide, but after Harvey struck Texas in late August the concert's theme turned to assistance for Houston and surrounding areas.

SEPTEMBER 20: Rick Nielsen and Robin Zander of the band Cheap Trick at The Children Matter Benefit Concert at CHS Field Stadium in St Paul, Minnesota. (Photo by Hannah Foslien/Getty Images for The Children Matter)

Frehley took the stage about three-fourths of the way into Simmons' set, then tore into "Cold Gin" and "Shock Me" before the finale "Rock and Roll All Nite."

The benefit concert also featured performances from classic rockers Cheap Trick, Don Felder and Flipp.

Gene Simmons preforms with fans at The Children Matter Benefit Concert Featuring Gene Simmons, Ace Frehley, Don Felder And Cheap Trick at CHS Field Stadium in St Paul, Minnesota. (Photo by Hannah Foslien/Getty Images for The Children Matter)
Robin Zander of Cheap Trick at The Children Matter Benefit Concert Featuring Gene Simmons, Ace Frehley, Don Felder And Cheap Trick on Sept 20, 2017 at CHS Field Stadium in St Paul. (Photo by Hannah Foslien/Getty Images for The Children Matter)
SEPTEMBER 20: Don Felder at The Children Matter Benefit Concert Featuring Gene Simmons, Ace Frehley, Don Felder And Cheap Trick at CHS Field Stadium in St Paul, Minnesota. (Photo by Hannah Foslien/Getty Images for The Children Matter)
SEPTEMBER 20: (L-R) Greg Eidem, Eric Bretl, Brynn Arens and Kii Arens of the band Flipp at The Children Matter Benefit Concert at CHS Field Stadium in St Paul, Minnesota. (Photo by Hannah Foslien/Getty Images for The Children Matter)