High on a Hilltop-Merle Haggard
https://www.youtube.com/watch?v=PxaGkkiueE0
I Saw the Light-Hank Williams
https://www.youtube.com/watch?v=xtolv9kM1qk
One of those songs I can sing to myself all day. ;-)
Here's another: I Am A Man Of Constant Sorrow