"Mackie Messer," also known as "Mack the Knife," is a famous song from the 1928 musical The Threepenny Opera, composed by Kurt Weill with lyrics by Bertolt Brecht. The character Mackie Messer is a charming yet ruthless criminal, embodying the themes of morality and corruption in society. The song's catchy melody contrasts with its dark subject matter, making it a notable piece in the world of musical theater. Over the years, "Mackie Messer" has been covered by many artists, including Louis Armstrong and Bobby Darin, contributing to its enduring popularity. The song's influence extends beyond theater, appearing in films and popular culture, solidifying Mackie Messer as an iconic figure in music history.