Reis made "K9" available on January 10, 2024. For a fairly short song, this song is "K9" is considered an explicit song with a duration of 1:59. Because this song is the only song in K9 and no other songs are present in the album, we classify this track as a single. Based on our statistics, K9's popularity is unknown right now. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.

K9 テンポ

We consider the tempo marking of K9 by Reis to be Allegro (fast, quick, and bright) because the track has a tempo of 150 テンポ, a half-time of 75テンポ, and a double-time of 300 テンポ. Based on that, the speed of the song's tempo is fast. Activities such as, jogging or cycling, can go well with this song. The time signature for this track is 3/4.

K9 キー

This song has a musical key of F♯ Minor. This also means that this song has a camelot key of 11A. So, the perfect camelot match for 11A would be either 11A or 10B. While, a low energy boost can consist of either 11B or 12A. For moderate energy boost, you would use 8A and a high energy boost can either be 1A or 6A. However, if you are looking for a low energy drop, finding a song with a camelot key of 10A would be a great choice. Where 2A would give you a moderate drop, and 9A or 4A would be a high energy drop. Lastly, 2B allows you to change the mood.