K2B Riquet's 'A.P.L.' came out on June 17, 2022. A.P.L. is 2 minutes and 45 seconds long and may contain bad words that may be unsuitable for children. Because this song is the only song in A.P.L. and no other songs are present in the album, we classify this track as a single. In terms of popularity, A.P.L. is currently below average in popularity. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

A.P.L. テンポ

The tempo marking of A.P.L. by K2B Riquet is Andante (at a walking pace), since this song has a tempo of 90 テンポ. With that information, we can conclude that the song has a slow tempo. This song can go great with yoga or pilates. The time signature for this track is 5/4.

A.P.L. 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.