Originally Posted by mondo
It is really simple...
If a song is in the key of C, C would be 1, C# would be 2, d would be 3, d# would be 4, e would be 5, f would be 6, so on and so forth...
15751 would be c e f# e c
Hope that helped.
That is set theory/dodecaphonic numbering. My impression was Nashville was still based on major/minor numbering.