Which musician sang the English-language chorus of McDonald's “I'm Lovin' It” jingle?

Justin Timberlake sang the English-language chorus of McDonald's “I'm Lovin' It” jingle.

McDonald's launched the “I'm Lovin' It” campaign internationally in 2003. The campaign used a pop-oriented sound and the now-famous “ba da ba ba ba” vocal phrase to connect the brand with youthful energy and enjoyment.

Timberlake recorded and performed the song associated with the campaign, while the project also involved the production team known as The Neptunes and advertising agency Heye & Partner. The music campaign was part of a broader global branding effort rather than simply a conventional single release.

The campaign's development is often confused with the performer of the jingle. McDonald's used creative work from several collaborators, but Timberlake is the named singer associated with the English-language chorus. The slogan itself remains the central brand phrase.