보내지 못한 마음

보내지 못한 마음 is a neutral song by Piano Ann with a tempo of 144 BPM. It can also be used half-time at 72 BPM or double-time at 288 BPM. The track runs 2 minutes and 49 seconds long with a F♯/G♭ key and a minor mode. It has low energy and is very danceable with a time signature of 1 beat per bar .