Justin Timberlake performed the English-language vocals in the original 2003 “I’m Lovin’ It” recording used in McDonald’s global campaign. The track helped give the slogan a recognizable pop-music identity.
The campaign began with a jingle created by the German advertising agency Heye & Partner and adapted for McDonald’s international marketing. Pharrell Williams was involved in producing and writing the song, while Timberlake’s vocal performance made the English version strongly associated with the campaign.
This credit is sometimes confused because several major music figures were connected with the project. Pharrell’s production and songwriting role and Timberlake’s performance role are related but not identical. The branding campaign also used localized versions in other languages and markets.
The recording illustrates McDonald’s early-2000s strategy of joining a simple slogan to contemporary music. Rather than functioning only as background advertising, the jingle was promoted as a recognizable pop-oriented brand asset and helped distinguish the campaign from earlier slogan-led commercials.