Niall was given advice on how to reach those higher notes and the secret is to squeeze your buttcheeks together!
While Mr. Horan was on stage in Copenhagen, he gave his fans an insight about exactly why he squeezes his butt cheeks together when performing 'Fools Gold'
Niall told the fans how his vocal coach taught him a trick to improve his vocals.
"When we were in rehearsals for this, she told me that when I sing 'Fools Gold' and I get to the 'oooh' i must do this",
After demonstrating it to the crowd, Niall said, "and squeeze my bum cheeks together, because apparently, you can hit the note better if you do that".
We are all going to be keeping an eagle eye out for the bum squeeze moment!