"投函" by HAL had its release date on September 29, 2023. The duration of This song is about two minutes long, specifically at 2:31. This song does not appear to have any foul language. 投函's duration is considered a little bit shorter than the average duration of a typical track. There is only one song in ドラマ「ブラックポストマン」Original Soundtrack, so we believe that "投函" is a single. The popularity of 投函 is currently unknown right now. 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 投函 by HAL is Presto (very, very fast), since this song has a tempo of 200 BPM. The time signature for this track is 5/4.
This song is in the music 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.
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