"Know No Better" is a song by American electronic band Major Lazer from their EP of the same name and upcoming fourth studio album, Music Is the Weapon (2017). The song features Cuban-born American singer Camila Cabello, and American rappers Travis Scott and Quavo. It was released on June 1, 2017, as the album's fourth single. The song was written by Major Lazer member Diplo, King Henry, and Jr. Blender.

"Know No Better" comprises grand piano chords, dancehall rhythms and pitch-shifted vocal samples.

The official lyric video for "Know No Better" was uploaded to Major Lazer's YouTube channel on June 1, 2017.

The song's music video premiered on July 11. The clip follows a young aspiring dancer who is going through an awkward adolescent phase, morning routines and bullying at school, but dreams of being one of Major Lazer's back-up dancers. It features cameos by Cabello, Scott and Major Lazer members. Daydreaming works as his escape, since the one consistent between both worlds is his love of dance, as noted by writer Ryan Reed of Rolling Stone. An interactive version of this video, directed by Philip Andelman, was released on July 28 and hosted by interactive-video people Eko, where users can switch between the "dream" and "reality" storylines.

^*sales figures based on certification alone
^{^}shipments figures based on certification alone
sales+streaming figures based on certification alone

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