Once by Xero Song Details

On December 11, 2025, the song "Once" was released by Xero. With This song being less than two minutes long, at 1:48, we are fairly confident that this song is not explicit and is safe for all ages. Based on the duration of this song, this song duration is much smaller than the average song duration. There are a total of 20 in the song's album "Um Free". In this album, this song's track order is #7. Based on our statistics, Once's popularity is not that popular right now. The overall tone is very danceable, especially with its high energy, which produces more of a euphoric, cheerful, or happy vibe.

BPM and Tempo

With Once by Xero having a BPM of 130 with a half-time of 65 BPM and a double-time of 260 BPM, we would consider this track to have a Allegro (fast, quick, and bright) tempo marking. Because of this, we believe that the song has an overall fast tempo. Looking at the BPM of this song, this song might go great with walking. The time signature for this track is 4/4.

Music Key

The music key of this track is 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.

Want to find the BPM and music key for other songs? Check out our BPM and Key Finder page!