Eddie Vedder has long publicized his Cubs fandom, but the Pearl Jam lead vocalist has taken things to another level this October. Through the Cubs' five playoff games (four wins), Vedder is the leading voice of the team's long-suffering fans, appearing everywhere the Cubs go.

Vedder and the Cubs continued their celebration when the TV cameras went off Tuesday after the team's 6-4 win. The club went to Jon Lester's house for an after-party. Vedder followed and put on a mini-concert wearing a Cubs helmet.

Eddie Vedder jammin with the boys! #AllTheWay

A video posted by Kris Bryant (@kris_bryant17) on

Vedder is not just playing any song. The 50-year-old Evanston, Illinois, native jams to (Someday We'll Go) All the Way, his 2008 single about the Cubs' next World Series title, their first since 1908. As the story goes, Vedder was attending Cubs Fantasy Camp when Hall of Famer Ernie Banks asked him to write a song about the Cubs. Vedder penned the song during the camp and played it in Chicago for the first time in 2007.

Banks, "Mr. Cub," passed away at 83 in January. The two-time MVP has the dubious record of most games played without a postseason appearance, 2,528.

"You know he's here," Vedder said when asked what Banks would say right now. "I know my uncle's here. I know my brother's here."

As for Vedder's performance at Lester's house, it is soothing for Cubs fans to hear the team singing along with the rocker. The Cubs still need to win eight more games to reverse the Curse of the Billy Goat, but this young team feels confident enough to possibly go all the way.

When Vedder was asked if a new song will come out of this October experience, Vedder said, "It will be in the past tense. It's not going to be some day. It'll be like last week."

Unfortunately for Vedder, his role in the run will eventually have to end. He has to work.

"It's been a surprise," he says of the Cubs' postseason success. "We're touring and I have to leave before the World Series. All I'm saying is that the next few years we're not going to play in October."

Despite his scheduling, Vedder will be watching the Cubs as they attempt to finally return to World Series glory. Chicago's next opponent will be either the Los Angeles Dodgers or New York Mets. The two teams play Game 5 of their NLDS series Thursday.

More MLB: You Have To See Where Kyle Schwarber's HR Ends Up