Hailee Steinfeld joined James Corden on his Late Late Show to play a singing game called "First Line, Every Line".
The game involves singing the opening line of a song... for the entire song. And apparently, the game was originally invented as a way to annoy a persons' co-workers.
You can see how it could get annoying... But thankfully 'Starving' singer Hailee has an amazing voice!
Watch their game in the video above.