Which performer sang on the 2003 McDonald's “I'm Lovin' It” campaign recording?

Justin Timberlake sang on the 2003 McDonald's “I'm Lovin' It” campaign recording.

McDonald's launched “I'm Lovin' It” as a global marketing campaign in 2003. Timberlake provided vocals for the associated recording, while the campaign used the phrase and its distinctive musical hook across multiple markets.

The song and slogan are related but are not exactly the same thing. “I'm Lovin' It” functioned as McDonald's advertising language, while the recording helped give that language a memorable musical identity. The campaign was adapted for different countries and languages, but the central English phrase became one of the company's most durable modern branding elements.

Timberlake is sometimes credited as the sole creator of the campaign, but McDonald's worked with advertising and music collaborators. His role here is specifically the featured vocalist on the campaign recording, not the owner or inventor of the slogan.