Only was released on October 23, 2012 by Leaplay Music as a part of the album Incendies
BPM
Melodicness
How much the song possesses a clear and memorable tune that follows well-defined musical patterns. A song high in melodicness generally features clear and memorable instrumental or vocal lines.
Acousticness
A measure of how much a song relies on acoustic instruments (eg. piano, guitar, violin, drums, saxophone) instead of electronic or digitally synthesized
Valence
The musical positivity or emotional tone conveyed through the song's harmonic and rhythmic components. High valence corresponds to feelings of happiness, excitement, and euphoria while low valence is associated with sadness, anger, or melancholy.
Danceability
A combination of factors including tempo stability, rhythmic patterns, and beat emphasis to determine how suitable a song is for dancing. A "danceable" song may feature a consistent tempo, repetitive musical structure, and strong downbeats.
Energy
The perceived intensity of a track which may be influenced by tempo, dynamics, and musical compactness. A high energy song may have a driving rhythm and dense instrumentation while a low energy song can be musically sparse and feature slower tempos.


![Watch 정재일(Jung Jae Il) - 그럴지도 모른다고 [윤도현의 러브레터] | KBS 20040604 방송 on YouTube Watch 정재일(Jung Jae Il) - 그럴지도 모른다고 [윤도현의 러브레터] | KBS 20040604 방송 on YouTube](https://i.ytimg.com/vi/GukzJQ5fFJ8/maxresdefault.jpg)