Stoop Kids made "Happy Birthday" available on January 20, 2015. Happy Birthday is explicit and may not be suitable for children. With the duration being about 3:50, this song is close to the average duration of a typical track. The song is number 7 out of 9 in Already Out of Time by Stoop Kids. The popularity of Happy Birthday is currently average in popularity right now. Since there is more of a neutral sound being played, this makes the track somewhat danceable.

Happy Birthday テンポ

The tempo marking of Happy Birthday by Stoop Kids is Vivace (lively and fast), since this song has a tempo of 166 テンポ. With that information, we can conclude that the song has a fast tempo. The time signature for this track is 4/4.

Happy Birthday キー

This song has a musical key of G Major. This also means that this song has a camelot key of 9B. So, the perfect camelot match for 9B would be either 9B or 10A. While, 10B can give you a low energy boost. For moderate energy boost, you would use 6B and a high energy boost can either be 11B or 4B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 9A or 8B will give you a low energy drop, 12B would be a moderate one, and 7B or 2B would be a high energy drop. Lastly, 6A allows you to change the mood.