Justin Bieber might want to learn 'Despacito' lyrics

Justin Bieber performs on stage during the One Love Manchester Benefit Concert at Old Trafford Cricket Ground on June 4, 2017 in Manchester, England.

(CNN)Justin Bieber is on one of the hottest songs of the year, but he doesn't know the words.

The Biebs appears on Puerto Rican singer Luis Fonsi and reggaetón star Daddy Yankee's "Despacito."
The song is sung in Spanish (the title means slowly in Spanish), and it recently hit