On “NDA,” Billie details her struggles with fame, particularly the trials she has to face to keep romances under the radar by having those around her sign an NDA, or a Non-Disclosure Agreement. As the track progresses, Eilish can’t help but wish her life were different and didn’t require her to navigate the obstacles she faces.

The song also plays on the titles and theme of several other tracks on Happier Than Ever, including “Getting Older,” “I Didn’t Change My Number,” “my future,” and “Therefore I Am.”