In honor of Loretta Lynn’s 87th birthday on April 14, a number of artists took part in her All-Star Birthday Celebration Concert at Nashville’s Bridgestone Arena on April 1, including Alan Jackson, Brandy Clark, Darius Rucker, Garth Brooks, George Strait, Jack White, Kacey Musgraves, Keith Urban, Little Big Town, Margo Price, Martina McBride, Miranda Lambert, Pistol Annies, Trisha Yearwood and more.

In addition to teaming with Lee Ann Womack to sing Loretta and Conway Twitty’s 1973 duet, “Louisiana Woman, Mississippi Man,” Alan Jackson performed his post-9/11 ballad, “Where Where You (When the World Stopped Turning).”

While the serious nature of the song may seem out of place at a birthday celebration, it was revealed that Loretta personally requested that Alan perform the touching song.

Watch Alan perform “Where Where You(When the World Stopped Turning).”