How about a song to the tune of  �10 Green Bottles �?
 
Twelve princesses dancing in a row.
Twelve princesses dancing in a row.
And if one princess should stand on someone �s toe,
There �ll be eleven princesses dancing in a row.
 
Eleven princesses dancing in a row, ten, nine etc. until you reach two.
 
Two princesses dancing in a row.
Two princesses dancing in a row.
And if one princess should stand on someone �s toe,
There �ll be one princess dancing all alone.