Inja made "Smile & Wave" available on June 18, 2021. With this song being around four minutes long, at 3:50, 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. Since Smile & Wave only contains only one song in the album, we like to consider this song as a single. Smile & Wave is average in popularity right now. Even with the track produces more of a neutral energy, it is pretty danceable compared to others.

Smile & Wave テンポ

With Smile & Wave by Inja having a テンポ of 87 with a half-time of 44 テンポ and a double-time of 174 テンポ, we would consider this track to have a Andante (at a walking pace) tempo marking. Because of this, we believe that the song has an overall slow tempo. Looking at the テンポ of this song, this song might go great with yoga or pilates. The time signature for this track is 4/4.

Smile & Wave キー

This song is in the music key of D♭ Major. Or for those who are familiar with the camelot wheel, this song has a camelot key of 3B. So, the perfect camelot match for 3B would be either 3B or 4A. While, 4B can give you a low energy boost. For moderate energy boost, you would use 12B and a high energy boost can either be 5B or 10B. Though, if you want a low energy drop, you should looking for songs with either a camelot key of 3A or 2B will give you a low energy drop, 6B would be a moderate one, and 1B or 8B would be a high energy drop. Lastly, 12A allows you to change the mood.