Gad says he flubbed a live rendition of the song at Carnegie Hall.

You might not want to build a snowman with Olaf anymore after hearing this.

Despite not knowing the lyrics, Gad said he continued with the performance anyway.

Josh Gad; Olaf

Josh Gad doesn’t know the lyrics to ‘Frozen’ hit ‘Let It Go.'.Jesse Grant/Getty Images; Disney

“Not a single word was correct.

It was a disaster.

And of course this is a true story I had the only working mic on the stage.”

Menzel’s version famously went on to become one of the biggest smash singles of 2013, reaching No.

5 on theBillboardHot 100 before being certified 8x Platinum by the Recording Industry Association of America.

The Lopezs also won the 2014 Oscar for Best Original Song for penning the tune.

The couple would later score another nod for writing “Into the Unknown” for the 2018Frozensequel.

Hear more on all of today’s must-see picks on EW’sWhat to Watchpodcast, hosted by Gerrad Hall.