PERR made "Welcome and goodbye." available on November 17, 2023. Welcome and goodbye. is 2 minutes and 20 seconds long and may contain bad words that may be unsuitable for children. Since Welcome and goodbye. only contains only one song in the album, we like to consider this song as a single. Welcome and goodbye. is not that popular right now. The overall mood can be danceable to some, especially with it's high amount of postive energy.

Welcome and goodbye. テンポ

Since Welcome and goodbye. by PERR has a tempo of 70 beats per a minute, the tempo markings of this song would be Adagio (slowly with great expression). With Welcome and goodbye. being at 70 テンポ, the half-time would be 35 テンポ with a double-time of 140 テンポ.In addition, we consider the tempo speed to be pretty slow for this song. The time signature for this track is 4/4.

Welcome and goodbye. キー

This song has a musical key of D♭ Minor. Or for those who are familiar with the camelot wheel, this song has a camelot key of 12A. So, the perfect camelot match for 12A would be either 12A or 11B. While, a low energy boost can consist of either 12B or 1A. For moderate energy boost, you would use 9A and a high energy boost can either be 2A or 7A. However, if you are looking for a low energy drop, finding a song with a camelot key of 11A would be a great choice. Where 3A would give you a moderate drop, and 10A or 5A would be a high energy drop. Lastly, 3B allows you to change the mood.