Doggie in the Window

6   7   6   5   4 -6   6   5  6 -4
How much is that doggie in the window

 6  -7  -6    6  -5 -7  -6 6
the one with the waggily tail

6     7  6   5   4 -6  6   5   6 -4
How much is that doggy in the window

6 -7   -6    6 -5  5  -4   4 
I hope that doggie is for sale