Alexander Marcus (born 24 December 1979 in Berlin) is a persona of the German music producer Felix Rennefeld. He has become popular throughout Germany after a series of videos he produced and displayed on YouTube.
Rennefeld's music is a mixture of modern electronic club music and folk music, which he has named 'Electro Lore', a combination of 'electro' and 'folklore'. Alexander Marcus exaggerates many of the clichés present in pop music, and his music videos feature "trashy" objects, such as a recurrent plastic globe called "Globi". Spiegel Online sees the character as a typical example of a return to pop-art social criticism. Never breaking out of character, he leaves the question of whether he is a parody unanswered