Improvisation in the subway of Berlin. I was in Berlin for a week and I was getting out the subway station when I heard the guy rapping. I turned around and walked towards him. After listening to him killing it in a couple of songs I couldn't help myself from wanting to sing with him. This is the result. It was a great experiece. The beat is a group called Phantogram, song "When I'm small". I did freestyle on the base while he rapped his song "Anthem of the Lost".