Sianvar was an American progressive rock band from Sacramento, California, formed in 2013. The group currently consists of lead vocalist Donovan Melero, guitarists Will Swan and Sergio Medina, and drummer Joseph Arrington. The band is signed to Swan's independent record label Blue Swan Records. They released their debut self-titled EP on January 5, 2014 and their debut full-length studio album, Stay Lost, in August 2016. The band announced an indefinite hiatus on April 8, 2019.