There are at least 3 artists using the name Ortega.
1) Ortega is a four-piece sludge/doom collective from The North of The Netherlands. Four men tell a tale of the sea wich is told in a broad and visual manner. the sound is best described as dark metal balanced with spheric soundscapes together with slow and heavy riffs.
The band was formed in 2008 and has been playing local stages ever since. 2009 saw the release of their first recording, a promo containing 3 songs, and in 2010 their full-length concept album '1634' hit the shelves. Read more on Last.fm