Such a tough decision. So many different types of themes. I'll go with Natusme Yuujinchou. This Anime is my all time preferito for a reason (story, characters, animation, and MUSIC). All the Musica is so amazing, all the opening and ending songs. But the Musica that is woven within is so beautiful and brings back the memories. <3 The hard domanda is, which song to post from this series.