Ok, so in my thoughts, yes this middle part of the series is similar in terms of musical foreshadowing, and uses of characters. This series was particularly enjoyable as it introduces a new cast of characters, while retaining and re-introducing prequel characters (e.g. oboe guy). Sadly, however, the connections character-wise to the prequel were limited, bit was wisely chosen. I enjoyed again the musical choices and integration of a music into the plot. And of course the romance aspect sent shivers down my spine. All I can say is that, as a guy, this series made me soft. As a musician, this series re-inspired me.As an anime-lover, this series was like a refreshing touch of idealistic reality in a sea of fantasy and sci-fi. Again a great watch.

Watching the PREQUEL is recommended, but not needed.