639Hz (人間関係の向上)

639Hz (人間関係の向上) is a melancholic song by ソルフェジオ俱楽部 with a tempo of 126 BPM. It can also be used half-time at 63 BPM or double-time at 252 BPM. The track runs 5 minutes and 57 seconds long with a G♯/A♭ key and a minor mode. It has low energy and is not very danceable with a time signature of 1 beat per bar .