3Versë, Niceguy made "hello." available on May 5, 2022. hello. is 2 minutes and 12 seconds long and may contain bad words that may be unsuitable for children. Because this song is the only song in hello. and no other songs are present in the album, we classify this track as a single. In terms of popularity, hello. is currently below average in popularity. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.

hello. テンポ

We consider the tempo marking of hello. by 3Versë, Niceguy to be Andante (at a walking pace) because the track has a tempo of 106 テンポ, a half-time of 53テンポ, and a double-time of 212 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.

hello. キー

E Major is the music key of this track. This also means that this song has a camelot key of 12B. So, the perfect camelot match for 12B would be either 12B or 1A. While, 1B can give you a low energy boost. For moderate energy boost, you would use 9B and a high energy boost can either be 2B or 7B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 12A or 11B will give you a low energy drop, 3B would be a moderate one, and 10B or 5B would be a high energy drop. Lastly, 9A allows you to change the mood.