“I said, ‘Charles, you’re not going to leave without your ring,’” Pippi said.

That same night, before the Blues played at the Flyers, a few players visited a private social club in Philadelphia, where, during commercial breaks of an N.F.L. playoff game, the D.J. played the 1982 song “Gloria,” a catchy tune that has become the singalong soundtrack to the team’s resurgence.

The next night, the rookie goalie Jordan Binnington shut out the Flyers in his first N.H.L. start, and from then on, no team amassed more points than the Blues, who advanced to their first Cup finals since 1970.

“You see how everything works?” Glenn said. “It’s meant to be.”

[Read about how the Blues went from last place to the Stanley Cup finals.]

Glenn, a tenor, also sang at St. Louis Rams games, but he prefers the intimacy of hockey arenas, where the fans are so close to him that he can look into their eyes, if only for a second, and wink. He has loved to perform ever since his mother, an opera singer, appeared in a summer stock production of “Finian’s Rainbow” and needed a fill-in when a child actor got sick.

She volunteered her son. When she practiced the songs, he sang along with her anyway, so why not?

He was 4.

His first time on stage, he peed his pants. Between scenes, they dried, and he went out again and again, finishing the week. He wasn’t scared. Just nervous. Reflecting on that moment, what he called one of his earliest and most enduring memories, Glenn said he knew then that he would be a musician.

With the Grammy-winning group the Fifth Dimension, he opened for the Temptations, the Four Tops and the Supremes. As a solo artist, he opened for Meat Loaf. He hung with Smokey Robinson and the Miracles, Huey Lewis and the News and the Four Tops.