Delacey's smoky, yearning vocals were featured on EDM tracks by the likes of the Knocks and Alex Midi before she made her solo debut with the atmospheric pop song "My Man" in 2019. In the meantime, she established a résumé as a contributing songwriter for acts including the Chainsmokers, Zara Larsson, and Halsey, including the latter's chart-topping single "Without Me."

Born and raised in Orange County, California, Brittany Amaradio began singing and playing piano and guitar at a young age. After finishing high school, she briefly moved to Manhattan, where she wrote the song "New York City" the day before quitting her job and deciding to move back to the West Coast. After settling in Los Angeles, she signed a publishing deal with Universal, and "New York City" was brought to the attention of the Chainsmokers. The duo recorded the song for their 2015 EP Bouquet. Amaradio focused on songwriting for the next three years, although after adopting the pseudonym Delacey, she was featured on the minor 2016 dance hit "In the Air Tonight," a cover of the Phil Collins tune by Alex Midi. That year, her voice could also be heard on the song "Dream It Impossible," which was featured in an international smartphone campaign.

Delacey went on to co-write songs for artists including, but not limited to, Demi Lovato, Sabrina Carpenter, and Lost Kings, and 2018 saw the release of the Delacey co-penned single "Without Me" by Halsey. A worldwide hit, it went all the way to number one on the Billboard Hot 100 in January 2019. Just a few weeks later, Delacey's writing could be heard on another Hot 100 single, Zara Larsson's "Ruin My Life." In the meantime, Delacey signed with HITCO and released her official debut single, "My Man," in March 2019. A string of additional singles appeared throughout the year as she readied her full-length debut. Buoyed by the hit single "Cruel Intentions," Delacey's first album, Black Coffee, appeared in 2020. ~ Marcy Donelson, Rovi