Matuê's '777-666' came out on September 10, 2020. 777-666 is 2 minutes and 44 seconds long and may contain bad words that may be unsuitable for children. The track order of this song in Matuê's "Máquina do Tempo" album is number 5 out of 7. The popularity of 777-666 is currently fairly popular right now. Although the tone can be danceable to some, this track does projects more of a negative sound rather than a postive one.

777-666 テンポ

We consider the tempo marking of 777-666 by Matuê to be Presto (very, very fast) because the track has a tempo of 180 テンポ, a half-time of 90テンポ, and a double-time of 360 テンポ. Based on that, the speed of the song's tempo is fast. The time signature for this track is 4/4.

777-666 キー

This song is in the music key of B♭ Minor. Because this track belongs in the B♭ Minor key, the camelot key is 3A. So, the perfect camelot match for 3A would be either 3A or 2B. While, a low energy boost can consist of either 3B or 4A. For moderate energy boost, you would use 12A and a high energy boost can either be 5A or 10A. However, if you are looking for a low energy drop, finding a song with a camelot key of 2A would be a great choice. Where 6A would give you a moderate drop, and 1A or 8A would be a high energy drop. Lastly, 6B allows you to change the mood.