Singular: Act I is the third studio album by American singer Sabrina Carpenter. It was released on November 9, 2018, through Hollywood Records. Carpenter began work on the album shortly after the release of her second studio album, Evolution (2016). The dance-pop album is themed around self-empowerment and marked the first time where all songs on an album were co-written by Carpenter. In support of the album, Carpenter embarked on the Singular Tour in March 2019.