The Stadium Series caps a hat trick of sports-related appearances that has Grammer's head reeling.
It started in October when he played "The Star-Spangled Banner" before Game 1 of the World Series between the New York Mets and Kansas City Royals. Last month, right here, he sang the national anthem before the AFC Championship between the New England Patriots and the Denver Broncos.
"Seriously, until I was 16 or 17, I didn't care about anything other than ESPN," Grammer said with a laugh. "So, if you told that kid, my 16-year-old self, all the things I got to do this year and I get to cap by doing something with the NHL, he'd be, 'Wait! What? Really? This is the best day ever!'"
Grammer, 32, released his self-titled debut in 2011 and hit the charts with "Keep Your Head Up" and "Fine by Me." "Magazines or Novels," his second album, was released in 2014. "Honey, I'm Good," the second single, has been certified triple-platinum by the RIAA and was ranked one of the 10 best-selling songs of 2015 by Soundscan.
Not too bad for a boy from Chester, N.Y., who dreamed of doing something with sports.
"I grew up a huge jock, a lot of basketball and football," he said. "We had a pond in my back yard growing up and we played a lot of hockey too. I loved to score goals."
Grammer is the first of several musical acts Saturday. He will be joined by The Fray, Amber Riley, and The United States Air Force Marching Band.
Grammer said he is excited about the musical company he will keep at the Stadium Series, especially The Fray, a Denver-based band.
"I love those guys," he said. "They are hometown favorites. I'm excited to hang with them; we've done a bunch of stuff with them in the past."