Who recorded the featured vocals on McDonald's “I'm lovin' it” campaign track?

Justin Timberlake recorded the featured vocals on McDonald's “I'm lovin' it” campaign track.

The campaign launched in 2003 and used a musical identity to support McDonald's new global slogan. Timberlake's recording helped connect the advertising campaign with contemporary pop culture, while the short “ba da ba ba ba” hook became the part most strongly associated with the brand.

The campaign involved several creative contributors, so the roles are easy to mix up. The German agency Heye & Partner developed the original campaign concept, and the production history included music-industry collaborators. Timberlake supplied the recognizable featured vocal performance, but he did not create the entire advertising campaign alone.

The song-related material was released in a form associated with Timberlake's music career, while McDonald's used the hook and slogan across advertising markets. This combination of a global phrase and a musical signature helped “I'm lovin' it” become one of the company's longest-running brand platforms.