Oscar Gross is an Australian multi-instrumentalist and composer at the beginning of his career. Oscar plays Trombone, Double Bass, Acoustic, Electric and Bass Guitar, Drums and Piano and a great variety of other exotic instruments.

In 2010, at the age of 14 Oscar achieved his first feature film score credit for the film "A Heart Beat Away" where he was the composer of the film's main love theme. This was performed by the Sydney Scoring Orchestra.