Who performed the vocal version of McDonald’s “I’m lovin’ it” jingle?

Justin Timberlake performed the vocal version of McDonald’s “I’m lovin’ it” jingle.

The jingle formed part of the global McDonald’s campaign launched in 2003. Timberlake’s recording helped turn the short musical phrase into an audio signature that audiences could recognize independently of a particular commercial or country.

The campaign’s production history involved advertising agencies, music writers, and performers, so the slogan and the song are sometimes credited as though they were created by one person. The answer to the performer question is Justin Timberlake, while the advertising concept itself had a broader corporate and agency history.

The phrase later appeared in many kinds of McDonald’s media, including television commercials and promotional material. Its repeated musical treatment made the words a major part of the company’s modern brand identity.