It seems that everyone knows a slightly different version of this song, here are the letter notes for how I know it – let me know if your version is better 😀
G A ^C – ^C ^C ^C A – G
She’ll be coming round the mountain
E G ^C
When she comes
^C ^D ^E-^E ^E ^E ^G – ^E
She’ll be coming round the mountain
^D ^C ^D
When she comes
^G ^G ^E – ^E ^E ^E ^D – C
She’ll be coming round the mountain,
G – ^C ^C G ^D-^C
Coming round the mountain,
^E – ^E ^E ^E ^D – ^C
Coming round the mountain
^C B ^C
When she comes