Celtic boss Ange Postecoglou has developed a routine for when he hears the opening bars of "surreal" club anthem You'll Never Walk Alone.
The Parkhead manager has been in the job for six months and by now he'll likely be used to the pre-match running order from light shows on a European night to the huddle.
But the famous tune, shared with Liverpool and Borussia Dortmund, never gets old.
And for a brief moment in the tunnel just before kick-off, Postecoglou is transported back Down Under to his childhood bedroom.
He remembers getting up in the middle of the night and making sure he caught the fans in full voice before kick-off - and now makes sure he soaks up YNWA as his players remain in the dressing room.
Speaking with Aussie cricketer Shane Warne on the club's YouTube channel, he said: "When I got appointed that's the one thing people said to me, 'wait until you get to Celtic Park, you'll feel the atmosphere when you walk out'.
"And again, as a young kid I just followed English football, Scottish football, anything from the other side of the world, because in Australia at the time football wasn't the most professional or highly-publicised sport.
"I'd sit up in the middle of the night and watch games from over here and I always loved the atmosphere that was created.
"I'd get up early to watch the pre-match and you hear them singing the songs.
"I do it now at Celtic. Just before the lads go out, they're in the sheds and the dressing rooms.
"And I'll walk out of the dressing rooms and just stand in the tunnel, and listen to the crowd sing You'll Never Walk Alone before we walk out.
"That's the kind of stuff I dreamt about as a kid, to be involved in something like that.
"It's still a bit surreal for me - when I'm sitting there in the tunnel, I'm listening to it and thinking, 'I'm part of this now'."
