"366日" by HY was released on April 16, 2008. 366日 is about six minutes long, preciously at 5:52, making this song fairly long compared to other songs. The track order of this song in HY's "HeartY" album is number 12 out of 13. On top of that, Japan appears to be the country where this track was created. Based on our statistics, 366日's popularity is average in popularity right now. In our opinion, the overall tone is not very danceable and projects negative sounds, such as being sad, depressed, or angry.

366日 テンポ

We consider the tempo marking of 366日 by HY to be Allegro (fast, quick, and bright) because the track has a tempo of 152 テンポ, a half-time of 76テンポ, and a double-time of 304 テンポ. Based on that, the speed of the song's tempo is fast. Activities such as, running, can go well with this song. The time signature for this track is 4/4.

366日 キー

This song is in the music 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.