On 26 November 2019, Koffee released her first cross-over collaborative single "W", featuring hip-hop artist Gunna. On 13 November 2019, Koffee was announced as an opening act for Harry Styles on select dates of the North American leg of his 2020 Love On Tour, and on 3 December as an opening act for the Latin American leg. Her "Throne" video, which takes viewers on a tour through her home town of Spanish Town, Jamaica, debuted on The Fader on 22 January 2019. Her debut EP on the label, was released on March 14, 2019. In 2018, she also signed with Columbia Records UK, and Rapture. In 2019, Tory Lanez made a remix to "Toast" as a part of his International Fargo project which can be found on SoundCloud. Both Chronixx and Protoje appear in the video. Her next single, "Toast", was produced by (izybeats) and (Walshy Fire) of Major Lazer. BBC Radio 1Xtra named Koffee one of its "Hot for 2019" artists. Koffee's December 2018 single "Raggamuffin" called out gun violence and governmental neglect of the youth. Koffee and Chronixx appeared on BBC Music Introducing.LIVE on November 10. Chronixx invited her to join him a BBC Radio 1Xtra broadcast from Tuff Gong Studios, and she went on to tour with him in the UK at venues such as Bush Hall and at Alexandra Palace. In 2018, Jamaican reggae/dancehall singer, songwriter, and deejay Cocoa Tea brought her on stage at the 2018 Rebel Salute and Rototom Sunsplash in Jamaica and Spain respectively. In June she spent three weeks at number one on The Foundation Radio Network's Top 30 Reggae Chart covering New York City and South Florida. "Burning" grew out of her desire to inspire herself to push forward despite disappointment at not getting into post-secondary Sixth Form after she graduated from Ardenne High School. "Burning", her take on Upsetta Records' Ouji Riddim (which had been made popular by Jamaican artists Busy Signal and Luciano), followed. Koffee was introduced by Cocoa Tea at the Rebel Salute, a reggae festival, and has also performed with her musical inspirations Protoje and Chronixx. Awareness of the violence and social problems she witnessed growing up has influenced her lyrics, and besides Protoje and Chronixx she has cited Super Cat and Giggs among her musical inspirations. A tribute to Jamaican sprinter Usain Bolt, the song became a viral Instagram hit, once the athlete reposted it on his own Instagram. In 2017 she released her first single, "Legend", with just her voice and acoustic guitar. Koffee gained popularity after uploading a video to Instagram of her singing.
She indicated that the show gave her the first bit of confidence to perform and deliver music live. A defining moment for Koffee occurred her final year of high school, when she performed at her school's talent show with other gifted artists in front of about 1,000 people. She went on to learn music theory and vocal technique in her high school choir. In 2016, she won her school talent show at Ardenne High School located in Kingston, Jamaica without realizing that the informal show at which she performed in her school cafeteria had been an audition. She attended Ardenne High School in Kingston, Jamaica.
She sang in her church choir, taught herself guitar at the age of 12 on an instrument borrowed from a friend, and began writing lyrics inspired by listening to reggae singer Protoje. Koffee's first musical inspirations stemmed from her mother's religious background.
Koffee's mother was an occasional actress, Seventh-day Adventist, and a Ministry of Health employee.