Mike Morasky (born June 14, 1964) is an American composer, animator/visual effects artist, director and programmer. He is best known for his work at Valve composing the scores for Team Fortress 2, the Left 4 Dead series, Portal 2, Counter-Strike: Global Offensive and Half-Life: Alyx. He is also known for his visual effects work on The Lord of the Rings and The Matrix trilogies as well as founding the underground art bands Steel Pole Bath Tub, Milk Cult and DUH.