I am sure you do not have any of these from the '50s, but I do. You are missing a whole genre of American music.

Honky Tonk blues by Hank Williams

Long Black Veil by Lefty Frizzel

Satisfied Mind by Porter Wagoner

Tennesse Waltz by Pee Wee King

Chattanooga shoe Shine boy by Red Foley

Sixteen Tons by Tennesse Ernie Ford

Singin' the Blues by Marty Robbins

Walking the Floor over you by Ernest Tubb

Home of the Blues by Johnny Cash
Cry, Cry, Cry by Johnny Cash

Wild Side of Life by Hank Thompson

I'm Movin' On by Hank Snow
Rumba Boogie by Hank snow

Shitloads more, too numerous to mention.