Ikimonogakari's 'ふたり' came out on December 23, 2009. ふたり is about six minutes long, preciously at 6:20, making this song fairly long compared to other songs. The track order of this song in Ikimonogakari's "Hajimarinouta" album is number 9 out of 13. ふたり 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.
We consider the tempo marking of ふたり by Ikimonogakari 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.
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.