Alejandra Ghersi Rodríguez (born 14 October 1989), known professionally as Arca, is a Venezuelan musician and record producer based in Barcelona, Spain. She initially began releasing music under the name of Nuuro. After attending the Clive Davis Institute of Recorded Music, Ghersi first released the EP Baron Libre (2012) under the name Arca and subsequently released the EPs Stretch 1 and Stretch 2; the latter experimented with hip hop and brought her attention from prominent music publications.

She released her first two albums, Xen and Mutant, in 2014 and 2015 respectively. Her eponymous third album, Arca (2017), became the first to prominently feature her vocals. From 2020 to 2021, Ghersi released the Kick quintet, starting with the album Kick I (2020) and ending with Kick IIIII (2021); these recordings drew from styles such as IDM, reggaeton, avant-pop, techno, and ambient. Ghersi has frequently incorporated themes related to gender identity, non-binary identification, and psychosexuality in her work, particularly after coming out in 2018.

Ghersi has also worked frequently with other artists as producer and collaborator. She received production credits on releases such as Kanye West's Yeezus (2013), FKA Twigs' EP2 (2013), LP1 (2014), and Björk's Vulnicura (2015), Utopia (2017). She has additionally contributed to music by artists such as Kelela, The Weeknd, Frank Ocean, Planningtorock, Rosalía, Sia, Shygirl, and Lil Uzi Vert.

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