who sings this song from Walk the Line?

Question

not by johnny cash it goes,
she had hair, long and black, it hung down, to her back, dont cut it off, i need it to run my fingers threw

Answer 1

Here is the movie soundtrack listing:

1. Get Rhythm
2. I Walk The Line
3. Wildwood Flower
4. Lewis Boogie
5. Ring Of Fire
6. You're My Baby
7. Cry Cry Cry
8. Folsom Prison Blues
9. That's All Right
10. Juke Box Blues
11. It Ain't Me Babe
12. Home Of The Blues
13. Milk Cow Blues
14. I'm A Long Way From Home
15. Cocaine Blues
16. Jackson
17. Rock N' Roll Baby (Video Version)
18. Jackson (Video Version)

Answer 2

Try Jerry Lee Lewis or Elvis, they were portrayed in the movie as well.

Answer 3

It might be Elvis