Once & Future's 'hollow' came out on March 31, 2024. With this song being about 5 minutes long, at 5:09, "hollow" by Once & Future is fairly a long song compared to the average song length. This song does not have an "Explicit" tag, making it safe for all ages. Because this song is the only song in hollow and no other songs are present in the album, we classify this track as a single. hollow is not that popular right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

hollow テンポ

We consider the tempo marking of hollow by Once & Future to be Andante (at a walking pace) because the track has a tempo of 80 テンポ, a half-time of 40テンポ, and a double-time of 160 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.

hollow 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.