Buy a $20 gift certificate, get 10 free songs. Buy a $50 gift certificate, get 25 free songs. You automatically get the free songs into your account for using paypal, and then you can apply the gift certificate into your account so you don't have to give it to anyone else. If you use itunes to legitimately buy your songs, then it's getting songs on sale.
It works out to approx 66 cents per song
http://www.apple.com/itunes/give
It works out to approx 66 cents per song
http://www.apple.com/itunes/give