Ninja made "Door" available on June 16, 2017. With this song being around four minutes long, at 3:35, the duration of this song is pretty average compared to other songs. This track is safe for children and doesn't appear to contain any foul language, since the "Explicit" tag was not present in this track. Because this song is the only song in Door and no other songs are present in the album, we classify this track as a single. Based on our statistics, Door's popularity is below average in popularity right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Door テンポ

The tempo marking of Door by Ninja is Allegro (fast, quick, and bright), since this song has a tempo of 150 テンポ. With that information, we can conclude that the song has a fast tempo. This song can go great with jogging or cycling. The time signature for this track is 4/4.

Door キー

This song has a musical key of E Minor. Because this track belongs in the E Minor key, the camelot key is 9A. So, the perfect camelot match for 9A would be either 9A or 8B. While, a low energy boost can consist of either 9B or 10A. For moderate energy boost, you would use 6A and a high energy boost can either be 11A or 4A. However, if you are looking for a low energy drop, finding a song with a camelot key of 8A would be a great choice. Where 12A would give you a moderate drop, and 7A or 2A would be a high energy drop. Lastly, 12B allows you to change the mood.