There are three artists that record under the name Arca: 1) An experimental/glitch project of Nuuro, aka Alejandro Ghersi, a Venezuelan producer. His albums under the name Arca include: Stretch 1, Stretch 2 (released 2 giveaways on UNO) and the 2013 mixtape &&&&&. He has also been credited for his writing/producing efforts on Kanye West's album Yeezus. http://soundcloud.com/arca-2
2) arca is a french project initiated by Joan Cambon and Sylvain Chauveau at the beginning of the year 2000.

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