A South Korean tourist was walking around Florence and decided to join a group of local jazz musicians, culminating in a beautiful impromptu recital. The unknown tourist is obviously a very talented double bass player, and starts jamming away with a frolicking bass line. The YouTube video — which quickly attracted over 13.5 million views — shows the surprising results of an improvised musical session in which a tourist joins a group of street musicians in the Italian city of Florence, known for its history and wonderful works of art.