They met at a production team in Rock Mafia's studio while working in each member's individual projects.

[9][8] It gained popularity online, reaching more than 40 million streams on Spotify and being featured in TV series Teen Wolf and The Royals.

[12][13][14] They also appeared in the song "Addicted to a Memory", featured on Zedd's second studio album True Colors.

[28] Its music video, directed by Darnell Williams and Sam Sturges, was released on January 24, 2017,[29] and the track was featured on the TV series Riverdale.

[11] After leaving Interscope, they released some independent singles through 2018; "Fucked Up" on February, which music video was directed by Zac Wolf and premiered in May;[30][31] the promotional Buffalo Springfield cover "For What It's Worth" in March;[32][33] "Savage" in April[5] and "Chasers" in July.

[38][39] They also released some self-released singles as ":(" (also named "Sad Face"),[40] their collaboration with Sultan & Shepard and Rock Mafia "Miles to Your Heart"[41] and "Gameboy".

[44][45][46] On July 31, the duo released their single "Waking Up the Neighbors", which was initially set to be included in their debut studio album.