Which singer recorded the featured vocals for McDonald’s “I’m Lovin’ It” campaign song?

Justin Timberlake recorded the featured vocals for McDonald’s “I’m Lovin’ It” campaign song.

The campaign launched in 2003 and used a short musical hook that became closely associated with the McDonald’s brand. Timberlake’s recording helped give the international advertising platform a contemporary pop connection rather than presenting it only as a traditional jingle.

The musical phrase originated in work associated with the German agency Heye & Partner and the producer duo Mona Davis. Pharrell Williams was also involved in the broader song project, which is why his name is sometimes incorrectly given as the campaign’s featured singer.

The commercial song and the slogan are related but not identical: the slogan became McDonald’s global tagline, while the recording supplied the musical identity used in advertising.