Kodoku's ' "GOODBYE" was released on its scheduled release date, July 23, 2021. GOODBYE is 2 minutes and 3 seconds long and may contain bad words that may be unsuitable for children. Because this song is the only song in GOODBYE and no other songs are present in the album, we classify this track as a single. In terms of popularity, GOODBYE is currently average in popularity. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

GOODBYE テンポ

We consider the tempo marking of GOODBYE by Kodoku to be Andante (at a walking pace) because the track has a tempo of 94 テンポ, a half-time of 47テンポ, and a double-time of 188 テンポ. Based on that, the speed of the song's tempo is slow. Activities such as, yoga or pilates, can go well with this song. The time signature for this track is 4/4.

GOODBYE キー

This song is in the music key of D♭ Minor. This also means that this song has a camelot key of 12A. So, the perfect camelot match for 12A would be either 12A or 11B. While, a low energy boost can consist of either 12B or 1A. For moderate energy boost, you would use 9A and a high energy boost can either be 2A or 7A. However, if you are looking for a low energy drop, finding a song with a camelot key of 11A would be a great choice. Where 3A would give you a moderate drop, and 10A or 5A would be a high energy drop. Lastly, 3B allows you to change the mood.