The album was written entirely between the hours of midnight and 4 a.m.[5] due to the creativity lead singer and songwriter Sam Bentley felt arise during this time.

The band chose Ek to create a more upbeat sound compared to their previous releases,[7] incorporating electric guitars and synthesizers into their music.

Gareth Hipwell of Rolling Stone Australia gave the album three out of five stars and felt "Revelator Eyes" sounded as if "The muses of the witching hour [...] have breathed some hazy Eighties nostalgia" into Bentley's songwriting.

[18] Sara Tamim of Vulture Magazine was "fabulously yet not surprisingly impressed" by the band's second album; she also remarked positively on the interchange of styles and the "new, flurry sound with intergalactic guitar vibes" of opening track "Electric Indigo".

[16] Rating the album three out of five stars, Cahill went on to state that the band sound "calm and delirious" on "Bleed Confusion" and that "Woke Up from a Dream" is "timeless Americana".