Geddy Lee and Alex Lifeson perform at the South Park Anniversary Concert Event

For the first time in just over seven years, Geddy Lee and Alex Lifeson took to the stage once again to performed an extended rendition of their classic song Closer to the Heart. The surprise performance took place during the South Park 25 Anniversary Concert at the Red Rocks amphitheater in Colorado.

More about the concert event:

The two-night event on Aug. 9-10 at the historical outdoor Colorado amphitheater — featuring show creators Trey Parker and Matt Stone, along with performances from Primus and Ween — will be taped and aired on Comedy Central and Paramount+.

The concert, celebrating the 25th anniversary of the cartoon sitcom, will feature performances of classic songs from the show, including the theme song by Primus, premieres Aug. 13 on Comedy Central and will be available to stream the following day on Paramount+. It is unclear if the concert will have any surprise guests drop by, but as South Park fans know with Parker and Stone, always expect the unexpected.

I think Geddy and Alex qualifies as 'unexpected'.

You can watch a video of the performance at YouTube or via the embedded viewer below.