[PghBaldy]

Red River Valley
Yellow Rose of Texas
Blue Moon of Kentucky
and by Loretta Lynn, Blue Kentucky Girl
https://youtu.be/VAMmt77PnXI

[Michael.SF.]

Not exactly a 'country' version, but Elvis nailed this song during the Sun Sessions wioth Sam Philips:

Blue Moon of Kentucky -- Elvis Presley

[Kathy in Alaska]

Jo Stafford ~ Red River Valley (1949)

https://www.youtube.com/watch?v=D0ATnFtb1KA

Marty Robbins

https://www.youtube.com/watch?v=ZJIfOA4czsY

Gene Autry

https://www.youtube.com/watch?v=ZAn4Wo9JzQc