HJKXCC's 'ECHO' came out on September 5, 2023. ECHO is 2 minutes and 17 seconds long and may contain bad words that may be unsuitable for children. Because this song is the only song in ECHO and no other songs are present in the album, we classify this track as a single. In terms of popularity, ECHO is currently not that popular. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

ECHO テンポ

The tempo marking of ECHO by HJKXCC is Moderato (at a moderate speed), since this song has a tempo of 116 テンポ. With that information, we can conclude that the song has a moderate tempo. This song can go great with walking. The time signature for this track is 4/4.

ECHO キー

This song is in the music key of B Minor. This also means that this song has a camelot key of 10A. So, the perfect camelot match for 10A would be either 10A or 9B. While, a low energy boost can consist of either 10B or 11A. For moderate energy boost, you would use 7A and a high energy boost can either be 12A or 5A. However, if you are looking for a low energy drop, finding a song with a camelot key of 9A would be a great choice. Where 1A would give you a moderate drop, and 8A or 3A would be a high energy drop. Lastly, 1B allows you to change the mood.