Ari Staprans Leff (born August 8, 1994), known professionally as Lauv, is an American singer, songwriter and record producer based in Los Angeles. His debut EP Lost in the Light was released in 2015 and his compilation album I Met You When I Was 18 (The Playlist) was released in 2018. He has written songs for other artists including the singles "Boys" by Charli XCX, "No Promises" by Cheat Codes and Demi Lovato and "Imperfections" by Celine Dion. His debut studio album ~how i'm feeling~ was released on March 6, 2020. Lauv is a fully independent artist.