A traditional Afro-American folk song.

She'll be coming round the mountain when she comes
She'll be coming round the mountain when she comes
She'll be coming round the mountain
Coming round the mountain
Coming round the mountain when she comes

Singing aye aye yippee yippee aye
Singing aye aye yippee yippee aye
Singing aye aye yippee
aye aye yippee
aye aye yippee yippee aye

She'll be driving six white horses when she comes
She'll be driving six white horses when she comes
She'll be driving six white horses
Driving six white horses,
Driving six white horses when she comes

Singing aye aye yippee yippee aye
Singing aye aye yippee yippee aye
Singing aye aye yippee
aye aye yippee
aye aye yippee yippee aye

Oh, we'll all go out to meet her when she comes
Oh, we'll all go out to meet her when she comes
Oh, we'll all go out to greet her
All go out to meet her,
All go out to meet her when she comes

Singing aye aye yippee yippee aye
Singing aye aye yippee yippee aye
Singing aye aye yippee
aye aye yippee
aye aye yippee yippee aye

She'll be wearing pink pyjamas when she comes
She'll be wearing pink pyjamas when she comes
She'll be wearing pink pyjamas
Wearing pink pajamas
Wearing pink pyjamas when she comes

Singing aye aye yippee yippee aye
Singing aye aye yippee yippee aye
Singing aye aye yippee
aye aye yippee
aye aye yippee yippee aye

She will have to sleep with grandma when she comes
She will have to sleep with grandma when she comes
She will have to sleep with grandma
Have to sleep with grandma
Have to sleep with grandma when she comes

Singing aye aye yippee yippee aye
Singing aye aye yippee yippee aye
Singing aye aye yippee
aye aye yippee
aye aye yippee yippee aye

This song is a variation of a black spiritual song about the Second Coming of Jesus riding a chariot. The "She" refers to the chariot (cars, ships and many means of transport can be referred to as "she"). In the 1850's the lyrics were changed by railroad (railway) workers and becvame just a fun song by changing the "she" into a girl everybody's waiting. Today it is considered to be a kid's song. The original lyrics of the song were:

O, who will drive the chariot When she comes? O, who will drive the chariot When she comes? O, who will drive the chariot, O, who will drive the chariot, O, who will drive the chariot When she comes?
King Jesus, he'll be driver when she comes, When she comes . . . .
She'll be loaded with bright Angels When she comes . . . .
She will neither rock nor totter, When she comes . . . .
She will run so level and steady, When she comes . . . .
She will take us to the portals, When she comes . . . .