english: What have I learned in these 15 years since the song was born from going all over the world with four lines written on a coaster from a bar in Madrid?
non_english: Šta sam naučio u ovih 15 godina otkad se rodila pesma, prelazeći čitav svet s ova četiri stiha koje sam zapisao na podmetačima u jednom baru u Madridu?