Jasper Helderman (born January 27, 1987 in Almere, Netherlands), better known by his stage name Alvaro (stylized as ΛLVΛRO), is a Dutch record producer, songwriter, and DJ. His music is mostly electro house and progressive house. He is best known for his single "Welcome to the Jungle" (featuring Mercer and Lil Jon), which reached #3 on the Beatport main chart in June 2013 on Hardwell’s Revealed Recordings. He also produced "The Underground" on Spinnin' Records and more recently "Guest List" on Tiësto's label Musical Freedom, all of which ended up in the top 5 of the Beatport top 100.