Waylon, Willie and Billy Joe. Here's how 10 country music rule-breakers have fared at the CMAs.

The Country Music Association’s vocal duo of the year honor was first presented in 1970, three years after the awards show held its inaugural ceremony in 1967.

CMA Awards Live: Greatest Moments 1968-2015 is a 10-DVD set that chronicles the rich history of the country music awards. ... Merle Haggard’s 1970 take on “Okie from Muskogee”; ...