40 Hz Pure Frequency

40 Hz Pure Frequency is a melancholic song by Baby Lullaby Playlist with a tempo of 138 BPM. It can also be used half-time at 69 BPM or double-time at 276 BPM. The track runs 2 minutes long with a C key and a major mode. It has low energy and is very danceable with a time signature of 4 beats per bar .