DJ Somiak (born Stefan Rosales Obrzut, April 13, 1990) is a Peruvian DJ, producer and composer of electronic dance music.

He began his musical career in 2006. First, like a hobby, Somiak composed some tracks of trance and house music. Then, he was improving his sounds and he realized that music is his vocation.

In 2010, he produced his first official album “Peruvian Touch”, a mix of Andean sounds and electronic music. Influenced by artists like Tiesto, Safri Duo, George Acosta, Mauro Picotto, Robert Miles and Miki Gonzalez, he mixes trance and house beats with pan flute sounds in this album.
His principal songs from this album are his performances of “El Condor Pasa” and “Virgenes del Sol”, two classic Peruvian folk compositions.

After that project, Somiak produced his second album “Do the Dance”, where he presented his basic trance and house styles. The singles from this album are “In Memoriam”, “Take a Chance”, “Clubbing”, “Bailando” and “More than Words”.

“In the Groove” is the third Somiak’s album. Totally a house music album, he released two singles, “Saxophunk” and “The Houser”. Here, he presented a continuation of his house style, mixed with saxophone and piano sounds and influenced by latin and funky rhythms.

In 2011, Somiak produced his fourth album "13", returning to his trance style and improving his house style too. The album has a bit of electro house on some tracks.

"A Thing Called Love" is the fifth Somiak's album. Now, focusing in French house, Somiak produced this album influenced by Daft Punk, especially by Thomas Bangalter.

Other Somiak’s projects are his bootleg remixes of Daft Punk’s songs “Derezzed”, “Emotion”, “One More Time” and “Fresh”.

DJ Somiak also produces in a duo with Austrian electro and house producer DJ Redkay, simply called "Redkay & Somiak".

Their first album is "Prologue", a mix of their first styles, based in trance, electro and house music.
As it is called, the album is a prologue of their work until they find their own and unique sound.

After that, they focus in French house, influenced by Daft Punk and Justice. They started a project called "Blaze of Justice".