After graduating from high school, George moved to New York City to attend the Manhattan School of Music, where he played first trumpet with the MSM orchestra, wind ensemble, brass ensemble and contemporary music group. While at MSM, George studied trumpet with Cecil Collins, William Vacchiano and Mel Broiles, as well as conducting with Anton Coppola (uncle of Francis Ford Coppola). Some of his MSM classmates at that time included film composer Elliot Goldenthal, NYC Opera music director George Manahan, and jazz artists Angela Bolfil, Bob Mintzer and Kenny Kirkland. George soon became a much sought after freelance performer in the NY metro area, versatile in all styles of music.

After earning his Bachelor's degree in Trumpet Performance, George began to struggle with trumpet "embouchure" difficulties. During this time he continued his trumpet studies with Vincent Penzarella and Carmine Caruso. He also began jazz piano and composition studies with Dick Katz while trying to rehab his trumpet career. Just before moving to Austin, TX, George decided to focus his music career on piano and composition.

After moving to Austin in 1982, George continued composition studies at the University of Texas, studying with Karl Korte and Donald Grantham, and Southwest Texas State University where he studied composition with Russell Riepe and piano with Timothy Woolsey. While earning a Master's degree in composition, he continued his performance career around the Austin metro area, where he played piano and keyboards with a variety of jazz, Brazilian, salsa, and classic rock bands. In 1991, George became a faculty member at Southwestern Unviversity in Georgetown, TX where he teaches the jazz band, jazz piano and composition.

In 1994, George became an in-house composer for Origin Systems in Austin, for whom he composed music for some of the biggest hits in the computer game industry, including the "Wing Commander", "Crusader" and "Ultima" series. After four years at Origin, George left to start George Oldziey Music, Inc. and continued to compose and produce music for other games, including the Playstation 2 version of "Spongebob Squarepants" in 2002. George has served as an orchestrator, score producer and contributing composer for the Robert Rodriguez films "Spy Kids 2" , "Spy Kids 3", "Once Upon a Time in Mexico", "Kill Bill Volume 2", "Sin City", "The Adventures of Sharkboy and Lavagirl", and "Planet Terror".

His most recent film credits in that capacity are Team Everest: A Himalayan Journey and Planet Terror.

George also works in his home studio as a recording engineer and producer for many Austin-based performing artists.