Mike Morasky is an American composer, animator/visual effects artist, director and programmer. He is best known for his work at Valve Corporation composing the scores for Portal 2, the Left 4 Dead series, Team Fortress 2 and the original Portal. He is also known for his groundbreaking visual effects work on The Lord of the Rings and The Matrix trilogies as well as founding the seminal underground art band Steel Pole Bath Tub.
For Valve, Morasky composed the music for Team Fortress 2, Left 4 Dead, Left 4 Dead 2 (including composing and playing the guitar, keyboard and bass for the fictional hard rock band "Midnight Riders"), Portal 2, and provided additional music for the original Portal.
He also worked as a visual effects supervisor on the The Lord of the Rings and The Matrix film trilogies