Akaza’s Backstory "Demon Slayer: Infinity Castle OST”『劇場版「鬼滅の刃」無限城編』猗窩座の過去 by Kensei Music Song Details

"Akaza’s Backstory "Demon Slayer: Infinity Castle OST”『劇場版「鬼滅の刃」無限城編』猗窩座の過去" by Kensei Music had its release date on September 14, 2025. With this song being about 5 minutes long, at This song 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 Akaza’s Backstory "Demon Slayer: Infinity Castle OST”『劇場版「鬼滅の刃」無限城編』猗窩座の過去 and no other songs are present in the album, we classify this track as a single. Akaza’s Backstory "Demon Slayer: Infinity Castle OST”『劇場版「鬼滅の刃」無限城編』猗窩座の過去 is not that popular right now. In our opinion, the overall tone is not very danceable and projects negative sounds, such as being sad, depressed, or angry.

BPM and Tempo

The tempo marking of Akaza’s Backstory "Demon Slayer: Infinity Castle OST”『劇場版「鬼滅の刃」無限城編』猗窩座の過去 by Kensei Music is Andante (at a walking pace), since this song has a tempo of 88 BPM. With that information, we can conclude that the song has a slow tempo. This song can go great with yoga or pilates. The time signature for this track is 3/4.

Music Key

This song is in the music key of C Major. This also means that this song has a camelot key of 8B. So, the perfect camelot match for 8B would be either 8B or 9A. While, 9B can give you a low energy boost. For moderate energy boost, you would use 5B and a high energy boost can either be 10B or 3B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 8A or 7B will give you a low energy drop, 11B would be a moderate one, and 6B or 1B would be a high energy drop. Lastly, 5A allows you to change the mood.

Want to find the BPM and music key for other songs? Check out our BPM and Key Finder page!