Who said "Every composer has the right to make their own mistakes."?

This quote is attributed to George Gershwin.

Every composer has the right to make their own mistakes. - George Gershwin

"Every composer has the right to make their own mistakes."

George Gershwin Freedom

Jazz Composer Pianist American 1898–1937

"Life is a lot like jazz - it's better when you improvise"

"I frequently hear music in the very heart of noise"

"The real American folk song is a rag"

"True music must repeat the thought and inspirations of the people and the time"

"Freedom to pursue your passion is precious."

"Freedom comes at a cost."

"Order isn't restriction. It's freedom."

"Freedom comes with responsibility"