The phrase "popular idiom" is correct and can be used in written English.
It is typically used to refer to a commonly used expression or phrase that has a specific figurative meaning. Example: "The phrase 'hit the nail on the head' has become a popular idiom in the English language, meaning to accurately identify or solve a problem."
And the popular idiom is also resourcefully used to characterize satirically the prosecutor in Selma's trial.
He quickly embraced the musical idioms of his new country — particularly the openhearted popular idiom associated with Copland.
But anyone who has compiled a discography in any popular idiom probably owes something to the "sage of Hatch End".
And that has left the police and courts wrestling with how to treat a newly popular idiom many still dimly grasp.
In other words, they were nerds, and he considered their " 'highbrow' inflation of the popular idiom" to be "populism," which he set against the "social idea".
A vital element in his prose was his exploitation of the full potential of the Russian language, from the contemporary popular idiom to the language of ancient Russian chronicles and folk tales.
He added compositions in more popular idioms and scales, named himself Yatsuhashi Kengyō, and founded the Yatsuhashi school of koto.
By comparison, the audience for Latin music, among the most popular idioms surveyed, counts only about 20 percent of its audience in that demographic.
Composers have mixed and matched for centuries, recycling themes and styles from earlier periods and incorporating folk tunes and popular idioms into their scores.
How often composers now tout their affinity to popular idioms: "I grew up on the Beatles, on rock 'n' roll," they say.
He combined a sharp ear for the phrasing of many popular idioms with a relaxed swing and a natural leader's drive.
