SiM made "Jack. B" available on October 6, 2010. Jack. B is explicit and may not be suitable for children. With the duration being about 3:58, this song is close to the average duration of a typical track. The track order of this song in SiM's "LIVING IN PAiN" album is number 1 out of 6. In terms of popularity, Jack. B is currently below average in popularity. The overall mood can be danceable to some, especially with it's high amount of postive energy.

Jack. B テンポ

We consider the tempo marking of Jack. B by SiM to be Andante (at a walking pace) because the track has a tempo of 90 テンポ, a half-time of 45テンポ, and a double-time of 180 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.

Jack. B キー

This song has a musical key of F♯ Minor. This also means that this song has a camelot key of 11A. So, the perfect camelot match for 11A would be either 11A or 10B. While, a low energy boost can consist of either 11B or 12A. For moderate energy boost, you would use 8A and a high energy boost can either be 1A or 6A. However, if you are looking for a low energy drop, finding a song with a camelot key of 10A would be a great choice. Where 2A would give you a moderate drop, and 9A or 4A would be a high energy drop. Lastly, 2B allows you to change the mood.