Stone Temple Pilots debuted Jeff Gutt on vocals at this November 19th, 2016 private show for family and friends. Chester, Jay Baumgardner, and others were in attendance.
At one point during the show, Jeff invited Chester up to sing Pruno with the band.
This performance was unknown until December 2017.
Gutt said he invited Chester as his guest to the show and was humbled that Chester attended.