0 Smooth Criminal: How Do You Say “Badass” in Croatian? By HVentertainment on January 21, 2011 Dueling banjos are so passé. The new hotness is dueling cellos. A pair of young Croatian cellists, Stjepan Hauser and Luka Sulic, surrounded by a fleet of empty chairs, offer up this incredible version of Michael Jackson’s smooth criminal. Intense.