Valse Amoroso (waltz). Composed & performed by Nemanja Bogunovic (Belgrade, Serbia).
Bogunovic is an internationally performing guitar and composer. He has been playing guitar since age 7 and composing since age 14. His composition Valse Amoroso is very melodic and expressive. You can read more about Nemanja on his website where you can also purchase his sheet music (including this piece).