Ray made "♡km/h" available on June 7, 2017. With this song being around four minutes long, at 3:59, the duration of this song is pretty average compared to other songs. This track is safe for children and doesn't appear to contain any foul language, since the "Explicit" tag was not present in this track. The track order of this song in Ray's "Happy days" album is number 8 out of 14. On top of that, Japan appears to be the country where this track was created. The popularity of ♡km/h is currently not that popular right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

♡km/h テンポ

We consider the tempo marking of ♡km/h by Ray to be Presto (very, very fast) because the track has a tempo of 185 テンポ, a half-time of 92テンポ, and a double-time of 370 テンポ. Based on that, the speed of the song's tempo is fast. The time signature for this track is 4/4.

♡km/h キー

This song has a musical key of A♭ Major. This also means that this song has a camelot key of 4B. So, the perfect camelot match for 4B would be either 4B or 5A. While, 5B can give you a low energy boost. For moderate energy boost, you would use 1B and a high energy boost can either be 6B or 11B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 4A or 3B will give you a low energy drop, 7B would be a moderate one, and 2B or 9B would be a high energy drop. Lastly, 1A allows you to change the mood.