Lui Joseph made "Knock Knock!" available on December 9, 2019. The duration of Knock Knock! is about 3 minutes long, at 3:26. Based on our data, "Knock Knock!" appears to be safe for all ages and is not considered explicit. This track is about the average length of a typical track. Because this song is the only song in Knock Knock! and no other songs are present in the album, we classify this track as a single. Based on our statistics, Knock Knock!'s popularity is average in popularity right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Knock Knock! テンポ

We consider the tempo marking of Knock Knock! by Lui Joseph to be Allegro (fast, quick, and bright) because the track has a tempo of 140 テンポ, a half-time of 70テンポ, and a double-time of 280 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 4/4.

Knock Knock! キー

This song is in the music key of D♭ Major. This also means that this song has a camelot key of 3B. So, the perfect camelot match for 3B would be either 3B or 4A. While, 4B can give you a low energy boost. For moderate energy boost, you would use 12B and a high energy boost can either be 5B or 10B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 3A or 2B will give you a low energy drop, 6B would be a moderate one, and 1B or 8B would be a high energy drop. Lastly, 12A allows you to change the mood.