REVO's '希望へ向う序曲' came out on 2012. The duration of 希望へ向う序曲 is about 3 minutes long, at 3:15. Based on our data, "希望へ向う序曲" appears to be safe for all ages and is not considered explicit. This track is about the average length of a typical track. There is only one song in ブレイブリーデフォルト フライングフェアリー オリジナル・サウンドトラック, so we believe that "希望へ向う序曲" is a single. 希望へ向う序曲 is not that popular right now. In our opinion, the overall tone is not very danceable and projects negative sounds, such as being sad, depressed, or angry.
The tempo marking of 希望へ向う序曲 by REVO is Larghetto (rather broadly), since this song has a tempo of 64 テンポ. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.
This song has a musical key of B♭ Minor. Because this track belongs in the B♭ Minor key, the camelot key is 3A. So, the perfect camelot match for 3A would be either 3A or 2B. While, a low energy boost can consist of either 3B or 4A. For moderate energy boost, you would use 12A and a high energy boost can either be 5A or 10A. However, if you are looking for a low energy drop, finding a song with a camelot key of 2A would be a great choice. Where 6A would give you a moderate drop, and 1A or 8A would be a high energy drop. Lastly, 6B allows you to change the mood.