Barbara Mandrell made a rare public appearance to introduce Kelsea Ballerini's performance of "I Was Country When Country Wasn't Cool" at "Opry 100." ...

Kelsea Ballerini paid tribute to Barbara Mandrell with this moving 'Opry 100' performance of "I Was Country When Country Wasn ...

Though separated by 47 years in their Grand Ole Opry inductions, Country Music Hall of Famer Barbara Mandrell and award ... at the NBC-broadcasted "Opry 100" special on Wednesday evening.

NBC's Opry 100: A Live Celebration is set to be jam ... fans will get the chance to celebrate a bona fide country titan, Barbara Mandrell. Mandrell's mark on the country genre is indelible.

With Barbara Mandrell looking on, Kelsea Ballerini performed "I Was Country When Country Wasn't Cool" during Opry 100: A Live Celebration.

Billboard highlights 10 top moments from the Grand Ole Opry's centennial commemoration 'Opry 100: A Live Celebration' ...