Walkeer made "Felices 21" available on February 1, 2023. Felices 21 is explicit and may not be suitable for children. With the duration being about 4:16, this song is close to the average duration of a typical track. Because this song is the only song in Felices 21 and no other songs are present in the album, we classify this track as a single. In terms of popularity, Felices 21 is currently not that popular. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

Felices 21 テンポ

The tempo marking of Felices 21 by Walkeer is Moderato (at a moderate speed), since this song has a tempo of 118 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.

Felices 21 キー

The music key of this track is C Minor. Because this track belongs in the C Minor key, the camelot key is 5A. So, the perfect camelot match for 5A would be either 5A or 4B. While, a low energy boost can consist of either 5B or 6A. For moderate energy boost, you would use 2A and a high energy boost can either be 7A or 12A. However, if you are looking for a low energy drop, finding a song with a camelot key of 4A would be a great choice. Where 8A would give you a moderate drop, and 3A or 10A would be a high energy drop. Lastly, 8B allows you to change the mood.