It's even blaring through Rittenhouse Square twice a day.
The song gained popularity in the MLB when a Boston Red Sox catcher made it his walkout song to an empty Fenway Park during the pandemic.
Maybe it stuck with his former teammate, Kyle Schwarber, because it was added to the Phillies playlist.
'Dancing on my own': Phillies rocking out on way to NLDS
Fans say it's a fitting song for the Fightins.
"I think it's like total underdog song. We're still dancing, we're still here," said Ella Strauss of South Philadelphia.
SEE ALSO: Phillies clubhouse anthem, 'Dancing on My Own,' has team and fans rocking out into NLDS
Everyone has their own version as to how "Dancing on My Own" became the anthem.
"Wasn't it in the background of one of their videos in the locker room?" said Riley Compton of Rittenhouse Square.
"One of the guys played it during the season and they won again," said Chris Mullins, owner of McGillins Old Ale House in Philadelphia.
The song is part of the regular rotation on the modern jukebox at McGillin's Olde Ale House. Like it or not, there's no escaping it.
"This song wasn't on anybody's radar and now it's through the roof, kind of like the team. The team was on no one's radar and now we're going to the World Series," said 92.5 WXTU radio personality Nicole Michalik.
Michalik says there's a bit of controversy because Swedish singer Robyn released the original song in 2010 but the remix by Calum Scott and Tiesto is getting all the play.
Scott even received a request on Twitter to perform the song live in Philadelphia, to which he replied "I am down!!"
"Even JT Realmuto was like, 'we don't know why it works - it actually doesn't fit - but we love it and the locker room became obsessed with it and now all of Philadelphia is going crazy for this song," said Michalik.
"I keep dancing on my own. Dancing to the World Series baby," said Strauss.
According to Billboard Magazine, the song gained nearly 254,000 official on-demand U.S. streams on Oct. 15 - the day the Phillies eliminated the Braves in the NLDS. That's a 45% gain a week after the Phillies debuted the song publicly during the Wild Card round.
The song has become so popular this month that it's even appearing on iTunes's real-time sales Top 100.