What musical slogan is associated with McDonald's “I'm Lovin' It” campaign?

“Ba da ba ba ba” is the musical slogan associated with McDonald's “I'm Lovin' It” campaign.

The sound functions as a short audio logo, often called a sonic brand signature. It appears with the campaign's spoken or written slogan and helps identify McDonald's advertising even when the Golden Arches are not immediately visible. Its simplicity makes it easy to adapt across languages and advertising formats.

McDonald's introduced the global campaign in 2003. The phrase “I'm Lovin' It” supplied the verbal message, while the musical tag supplied a repeated sound associated with the company. Together they formed one of the most recognizable elements of McDonald's modern branding.

The syllables are sometimes written with different punctuation or capitalization, but the commonly cited form is “ba da ba ba ba.” It is not the company's earlier “You Deserve a Break Today” jingle, which belongs to a separate campaign from 1971.