As a boy he studied music with his father who was a school teacher and choral conductor.
He entered the Munich Akademie der Tonkunst where he studied composition with Ludwig Thuille.
After World War I, Schmid entered a highly successful part of his career both as a performer and composer.
His best work is probably his Symphony in D Minor (1947) which was admired for its fresh and accomplished treatment of traditional musical materials.
Elements of Bavarian folk music appear in the rural mass settings, choral compositions, lieder, chamber works, and his opera Finden und Meiden.