Which singer performed the original “I’m Lovin’ It” track used in McDonald’s branding?

Justin Timberlake performed the original “I’m Lovin’ It” track used in McDonald’s branding.

Timberlake recorded the song associated with McDonald’s 2003 campaign, and the track helped connect the advertising platform with contemporary pop music. The campaign’s short musical phrase became more famous in advertising than as a conventional standalone pop release.

The song was written and produced with contributions from Pharrell Williams and the production team known as the Neptunes. This sometimes leads people to identify Pharrell as the performer, but Timberlake supplied the vocal performance on the original track used for the campaign.

The branding campaign was notable because McDonald’s built a worldwide advertising identity around music, a concise English slogan, and adaptable local commercials rather than relying only on a mascot or product image.