Justin Timberlake performed the original English-language vocal for McDonald's 2003 “I'm Lovin' It” campaign.
McDonald's launched “I'm Lovin' It” globally in 2003, and Timberlake provided vocals for the campaign's associated song. The campaign used a short, repeatable musical hook that could work across television, radio, and international advertising.
The slogan became one of McDonald's most durable branding lines and was paired with the familiar “ba da ba ba ba” vocal motif. Timberlake's involvement is sometimes reduced to a songwriting credit, but he also performed the vocal used in the campaign.
The campaign was not simply a single traditional pop release. It was a coordinated global advertising platform in which music, celebrity, and a concise phrase reinforced McDonald's identity.