The song's popularity has led to countless covers by international artists, including famous instrumental versions by pianists like Yiruma and Kokia. This popularity means there is a vast repository of available, ranging from simple lead sheets to complex virtuoso arrangements.
The "interesting article" you're looking for likely revolves around the deep, personal tragedy behind Nada Sou Sou nada sou sou piano sheet music
Unfortunately, I couldn't find any official sheet music for "Nada Sou Sou" that I can directly provide. However, I can suggest some alternatives: The song's popularity has led to countless covers