Funds raised from the "Should've Been a Cowboy" cover will go toward the Toby Keith Foundation ... Music's Twitch channel.

During the Nashville's Big Bash New Year's Eve special on Tuesday night (Dec. 31), the singer performed Toby Keith's 1993 debut single, "Should've Been a Cowboy ... would never have known it ...

Hagar was one of three performers tapped to pay a musical tribute to the late Toby Keith including Brooks & Dunn, who sang "Shoulda Been a Cowboy," and ... truly honored to have been asked to ...

Oklahoma native Toby Keith Covel got his first ... and its first single, "Should've Been a Cowboy," became his first No. 1. Since then, Keith's ridden a consistent streak of Top 10 albums, 10 ...

Toby Keith's son ... there's a chance the couple's baby could be born on what would have been the "Should've Been a Cowboy" crooner's 64th birthday.

Related: Toby Keith's Son ... best mentor a man could ask for." At the end of his tribute, Stelen wrote, "It’s not goodbye forever; it’s just goodbye for now. I love you cowboy.

But the legacy of the "Should've Been a Cowboy" hitmaker continues to live on through his music and his family. The NBC special Toby Keith ... Do you have questions about the biggest topics ...