Here's a real fun song for harmonica and one of the most popular train wreck ballads there is.
The audio example is in the key of G. This one's a favorite, hope you have as much fun
playing it as we do!

Wreck of the Old 97

5    -5     6       6       5     4   4   -5     -5    -5     -6 7

On one cloudless morning I stood on the mountain.

  7   -6  6     7       7      -8        7 -6

Just a'watching the smoke below.

 -6 -7      7  7        7     7 -5    -5       -6 -7

 It was coming from a tall, slim smokestack

 7        -6     6     6    -5     5       5 -4 4

Way down on the Southern Railroad.