A pop and dance album, Feed the Beast explores themes of love, heartbreak and hedonism, filled with sex-positive lyrics on many of its songs.

[10][11] On 17 February 2023, the singer stated that an album that she had been working on "for three years" was ready to be released the next summer, sharing her excitement for people to hear the songs.

[18][19] Petras also described the album as her most personal, with "vulnerable, real moments [for her]", being a departure from some of her previously released projects such as Turn Off the Light (2019) and Slut Pop (2022), where she played characters to fit their musical narrative.

[18][20] According to Amazon Music, the album's concept was based on a "modern-day spin on the classic Greek tale Andromeda" with lyrics about "sacrificing every part of yourself to your biggest passion in life".

[21] The overall aesthetic features a medieval setting surrounded by rocks, a sword and chains, while the cover was shot by American photographer Luke Gilford.

[22][23][15] Feed the Beast is a pop and dance[1][2] album, incorporating multiple sub-genres on its songs, such as Europop,[24][25] house,[24][26] hyperpop[27][28] and disco.

[4] On a positive review, Nick Levine from NME called the album "a tremendously entertaining showcase for a pop star", praising Petras' ability to "go deep" when she wants to, while understanding the "visceral thrill of dumb escapism".

[28] Kayleigh Watson from The Line of Best Fit also gave the album a positive score, calling it a "sonic tour-de-force of euphoric dance anthems".

[41] Alexa Camp for Slant Magazine praised some songs such as "Thousand Pieces" and "Minute", but called it "safe" after her Slut Pop EP.