Who said "God knows I'm good."?

This quote is attributed to Queen.

God knows I'm good. - Queen

"God knows I'm good."

Queen

Rock Band British Born 1970 (age 56)

"I won't be a rock star. I will be a legend."

"The show must go on."

"I'm just a musical prostitute, my dear."

"I won't be fooled by romance."