Watch Jennifer Lawrence Reveal Her Terrible Singing Voice on 'Letterman'

Jeffrey R. Staab/CBS
Jennifer Lawrence chats with Dave on the Late Show with David LettermanĀ on November 11, 2014.

In The Hunger Games, Katniss Everdeen is afraid of losing her sister and her soul to an oppressive dictatorship. In real life, Jennifer Lawrence is afraid of a much more mundane problem -- public singing.

When the Oscar winner swung by Late Show With David Letterman on Wednesday night, she explained how her mother mislead her as a child, making young JLaw think she could actually sing. After a talent show humiliation involving a very scratchy "A Holly Jolly Christmas," Lawrence developed a serious aversion to public singing.

Lorde's 'Yellow Flicker Beat' Soundtracks New 'Hunger Games' Trailer

Unfortunately, her Hunger Games character sings a song called "The Hanging Tree" in the upcoming Mockingjay Part 1, so Lawrence had to face her fears. But before confronting her demons, she turned to Lorde.

"Will you guys please get Lorde to really sing it?" Lawrence recalls asking the filmmakers, hoping they could put Lorde's vocals over her lip-sync. "They said 'no.'"

For a bitter taste of Lawrence's singing voice, hear her mangle a Christmas classic with help from Letterman below.