4yu's ' "言えない" was released on its scheduled release date, September 28, 2025. The duration of This song is about two minutes long, specifically at 2:56. This song does not appear to have any foul language. 言えない's duration is considered a little bit shorter than the average duration of a typical track. There is only one song in よんばんめ。, so we believe that "言えない" is a single. In terms of popularity, 言えない is currently not that popular. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.
The tempo marking of 言えない by 4yu is Andante (at a walking pace), since this song has a tempo of 90 BPM. With that information, we can conclude that the song has a slow tempo. This song can go great with yoga or pilates. The time signature for this track is 4/4.
F♯ Major is the music key of this track. This also means that this song has a camelot key of 2B. So, the perfect camelot match for 2B would be either 2B or 3A. While, 3B can give you a low energy boost. For moderate energy boost, you would use 11B and a high energy boost can either be 4B or 9B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 2A or 1B will give you a low energy drop, 5B would be a moderate one, and 12B or 7B would be a high energy drop. Lastly, 11A allows you to change the mood.
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