High Risk Area made "Prolog" available on June 19, 2015. For a fairly short song, this song is "Prolog" is considered an explicit song with a duration of 1:06. The track order of this song in High Risk Area, Drumtomski, Tetsuo's "HRA" album is number 1 out of 16. In terms of popularity, Prolog is currently not that popular. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

Prolog テンポ

We consider the tempo marking of Prolog by High Risk Area to be Andante (at a walking pace) because the track has a tempo of 91 テンポ, a half-time of 46テンポ, and a double-time of 182 テンポ. Based on that, the speed of the song's tempo is slow. Activities such as, yoga or pilates, can go well with this song. The time signature for this track is 4/4.

Prolog キー

This song is in the music key of B♭ Minor. Because this track belongs in the B♭ Minor key, the camelot key is 3A. So, the perfect camelot match for 3A would be either 3A or 2B. While, a low energy boost can consist of either 3B or 4A. For moderate energy boost, you would use 12A and a high energy boost can either be 5A or 10A. However, if you are looking for a low energy drop, finding a song with a camelot key of 2A would be a great choice. Where 6A would give you a moderate drop, and 1A or 8A would be a high energy drop. Lastly, 6B allows you to change the mood.