永声群星's '不变的情 - Unchained Melody 国语版' had a release date set for January 1, 2000. With this song being around four minutes long, at 3:34, the duration of this song is pretty average compared to other songs. This track is safe for children and doesn't appear to contain any foul language, since the "Explicit" tag was not present in this track. There is only one song in 现代国语经典 3, so we believe that "不变的情 - Unchained Melody 国语版" is a single. 不变的情 - Unchained Melody 国语版 is unknown 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 不变的情 - Unchained Melody 国语版 by 永声群星 is Adagio (slowly with great expression), since this song has a tempo of 68 BPM. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.
B♭ Major is the music key of this track. This also means that this song has a camelot key of 6B. So, the perfect camelot match for 6B would be either 6B or 7A. While, 7B can give you a low energy boost. For moderate energy boost, you would use 3B and a high energy boost can either be 8B or 1B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 6A or 5B will give you a low energy drop, 9B would be a moderate one, and 4B or 11B would be a high energy drop. Lastly, 3A allows you to change the mood.
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