“I'm Lovin' It” launched in 2003 as McDonald's global advertising slogan and became associated with the “ba da ba ba ba” jingle. It was the company's first global marketing campaign using one central slogan.
The campaign was introduced in Munich, Germany, and used music, short films, and worldwide adaptations to give McDonald's a more contemporary identity. The wording was deliberately informal and conversational, matching the campaign's focus on everyday enjoyment.
The song connected with the campaign is often linked to Justin Timberlake, who recorded a version of the track, while the advertising concept involved the agency Heye & Partner. The slogan itself belongs to McDonald's branding rather than being the title of a menu item.
Earlier campaigns, including “You Deserve a Break Today,” were major successes but were not designed as the same kind of unified global platform. “I'm Lovin' It” remains one of the chain's defining modern brand phrases.