Banba made "I'll be" available on February 26, 2021. I'll be is about six minutes long, preciously at 5:41, making this song fairly long compared to other songs. Because this song is the only song in I'll be and no other songs are present in the album, we classify this track as a single. Based on our statistics, I'll be'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.

I'll be テンポ

We consider the tempo marking of I'll be by Banba to be Allegro (fast, quick, and bright) because the track has a tempo of 124 テンポ, a half-time of 62テンポ, and a double-time of 248 テンポ. Based on that, the speed of the song's tempo is fast. Activities such as, walking, can go well with this song. The time signature for this track is 4/4.

I'll be キー

A Minor is the music key of this track. Because this track belongs in the A Minor key, the camelot key is 8A. So, the perfect camelot match for 8A would be either 8A or 7B. While, a low energy boost can consist of either 8B or 9A. For moderate energy boost, you would use 5A and a high energy boost can either be 10A or 3A. However, if you are looking for a low energy drop, finding a song with a camelot key of 7A would be a great choice. Where 11A would give you a moderate drop, and 6A or 1A would be a high energy drop. Lastly, 11B allows you to change the mood.