Written by Rodney Crowell, "Sing" is the closing track and title track to Wynonna Judd's album, Sing: Chapter 1.Allmusic critic, Thom Jurek reviewed "Sing", giving it praise. Jurek stated, "This final track is a new pop country anthem; it underscores Judd's sheer individualism and style, and offers a complete illustration of her gifts as a singer."
Shortly after it was released to country radio, the song was remixed for dance airplay. The song reached the Top 5 on the BillboardHot Dance Club Songs chart in August 2009, peaking at number 4. It became her first Top 5 single on any Billboard chart since "To Be Loved by You" reached number one in 1996.