Brittany Marie Amaradio, known professionally as Delacey, is an American singer and songwriter. Having co-written songs such as "New York City" for The Chainsmokers, "Ruin the Friendship" for Demi Lovato, "Ruin My Life" by Zara Larsson, and "Without Me" for Halsey, in March 2020, she released her debut album, Black Coffee. She released her second album, The Girl Has A Dream, in 2023 featuring the single "Boy With The Blues."