Definition & Meaning of "[make] a song and dance about"

What is the origin of the idiom "make a song and dance about" and when to use it?

The idiom "make a song and dance about" has its origins in the world of theater and performance. This idiom suggests that someone is overemphasizing a situation, just like a performer making an elaborate and attention-grabbing performance on stage. It is commonly used to criticize individuals who are being melodramatic or overly demonstrative about a relatively unimportant matter.