Which singer recorded the 2003 McDonald's “I'm Lovin' It” campaign song?

Justin Timberlake recorded a version of the song for McDonald's 2003 “I'm Lovin' It” campaign.

The campaign used music to give its new global slogan a strong audio identity. Timberlake's recording helped connect the advertising phrase with a contemporary pop sound, while the slogan itself appeared in McDonald's marketing around the world.

The origin of the campaign involved work by the German agency Heye & Partner and music associated with the phrase “Ich liebe es,” which means “I love it” in German. That background can cause confusion about who wrote, performed, or first popularized the material.

Timberlake's role was as the prominent recording artist associated with the campaign song. He was not the sole creator of the entire branding platform, which involved agencies, writers, producers, and McDonald's international marketing teams.