On the eve of the game, England manager Southgate said he hoped the team's successful run at the tournament would help unify the country after "some hard moments" in recent years - an apparent reference to Brexit.
The England manager has revealed he couldn't bear to hear the football song after missing a penalty in Euro '96.
"It has a slightly different feel for me, but it's nice to hear people enjoying it again".
"We thought it would be really good fun and a way of showing our pride in our national team - with lots of little ones in waistcoats, just like we were at a big wedding with a lot of children, rather than just a normal dress-up day".
He added: "Our country has been through some hard moments recently in terms of its unity, and sport has the power to do that (unite people)".
Live Stream and TV Info for Croatia Vs. England
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England, meanwhile, were tested by Colombia before comfortably dispatching of Sweden in the quarter-finals.
If Southgate's young side overcome Russian Federation tonight they will face France in the World Cup final next Sunday in Moscow, their first final since 1966.
Southgate, though, says his side have not even begun to realise their potential.
"Croatia, I think, will stay in a lower block and will try to find solutions on the counter-attack because they have very fast players with [Andrej] Kramaric, [Ante] Rebic and also [Mario] Mandzukic, who is a fighter, and also maybe with the individual brilliance from Modric and Rakitic".