The Shin Sekaï made "Alter ego" available on March 25, 2016. With this song being around four minutes long, at 3:50, 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. The track order of this song in The Shin Sekaï's "Indéfini" album is number 6 out of 18. In terms of popularity, Alter ego is currently average in popularity. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.
We consider the tempo marking of Alter ego by The Shin Sekaï to be Andante (at a walking pace) because the track has a tempo of 99 テンポ, a half-time of 50テンポ, and a double-time of 198 テンポ. Based on that, the speed of the song's tempo is slow. The time signature for this track is 4/4.
This song has a musical 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.