In 2018, Leah Kate started publishing song covers on her self-titled YouTube channel. During this time, she released her debut EP, Impulse, which featured the hits "WTF? ", as well as "So Good."
Following the release of the EP, Leah Kate released the songs "Visions" and "Bad Idea." Kate released "Fuck Up the Friendship" in June 2020, which gained popularity on TikTok and was streamed over 33 million times on Spotify.
Leah Kate followed up with many songs, including "Grave," "Boyfriend," and "Boy Next Door."
In anticipation of her second EP, What Just Happened?, Leah Kate released the singles "Calabasas" and "Veronica."
, which was set to be released in October 2021.
Leah Kate had planned to open for Bailey Bryan on her Fresh Start Tour across the United States and Canada, however because to the COVID-19 outbreak, the tour was reduced to to two concerts.
Leah Kate released the track "Shit Show" a week before the EP's release date of September 24, 2021. "F U Anthem," the EP's fifth and final track, was later released.
Leah Kate launched the track "Dear Denny" in March 2022 and shortly followed it up with the release of "10 Things I Hate About You," her first song on a big label, 10k Projects, after it went popular on TikTok.
Leah Kate toured North America with Chase Atlantic on their Cold Nights Tour and released her single "Twinkle Twinkle Little Bitch" in 2022. On October 28, 2022, Leah Kate will begin her maiden headline tour in Manchester.