Destructoid reports the camp of Valve Software composers has just widen – Jason Hayes, a man of talent, left Blizzard. 

Now "electronic" Mike Morasky has a "symphonist" partner.

Up to the present, Jason worked for a long time with Blizzard, and then went to Carbine Studios, where he actively worked on unannounced MMORPG.

First job with Valve was sounding of Dota 2 Gamescom trailer, voiced by together with him and Tim Larkin.

Also, according to our knowledge Dota 2 was dubbed by his toughness John St. John (the voice of Duke Nukem).