自由發揮, 張兆志's '預告片' had a release date set for January 1, 2011. With This song being less than two minutes long, at 1:41, we are fairly confident that this song is not explicit and is safe for all ages. Based on the duration of this song, this song duration is much smaller than the average song duration. There is only one song in 電影原聲帶, so we believe that "預告片" is a single. In terms of popularity, 預告片 is currently not that popular. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.
The tempo marking of 預告片 by 自由發揮, 張兆志 is Andante (at a walking pace), since this song has a tempo of 103 BPM. With that information, we can conclude that the song has a slow tempo. The time signature for this track is 4/4.
A♭ Major is the music key of this track. This also means that this song has a camelot key of 4B. So, the perfect camelot match for 4B would be either 4B or 5A. While, 5B can give you a low energy boost. For moderate energy boost, you would use 1B and a high energy boost can either be 6B or 11B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 4A or 3B will give you a low energy drop, 7B would be a moderate one, and 2B or 9B would be a high energy drop. Lastly, 1A allows you to change the mood.
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