Sleepy LaBeef is a genuine rockabilly survivor, having been there when the music was born in the 1950s and still performing today at the age of 77.
After a few rockabilly singles in the late '50s, Labeef moved to Nashville where his music took a decidedly country turn. He had a couple of minor hits (Every Day and Blackland Farmer) before signing with the rejuventated Sun Records and returning to his rockabilly roots.
The album Downhome Rockabilly was issued (on gold vinyl yet) by Sun in 1979. From it comes Boogie Woogie Country Girl. The MP3 available at the link below comes from a cassette copy.
Boogie Woogie Country Girl
Downhome Rockabilly is available as a download, but does not appear to have been released as a standalone CD. However, all of Labeef's Sun tracks were issued on the six-CD box Larger Than Life by the German company Bear Family in 1996.
From YouTube here's a dynamite Sleepy Labeef performance at the Minnesota State Fair in 2006.