Metallica's James Hetfield and Kirk Hammett will perform "The Star-Spangled-Banner" prior to Game 4 of the Stanley Cup Final between the Pittsburgh Penguins and San Jose Sharks at SAP Center on Monday (8 p.m. ET; NBC, CBC, TVA Sports).

Hetfield and Hammett will rock the Shark Tank for a good cause. Each of the guitars used during the performance will be signed by the members of the band, displayed on the concourse during the game and then donated to the Sharks Foundation to be auctioned. Fans will be able to bid on the guitars until Wednesday, June 15, with proceeds going to Little Kids Rock and the Ronald McDonald House at Stanford, with each receiving 50 percent of the total raised.