iTunes Store is the most popular online music store in United States that offers music, movies, TV shows, applications, podcasts, games and much more for your iPod and iPhone.
It also offers free music, applications, games, podcasts etc. but to download them or the album art, you need to create an account at iTunes Store that requires a credit card to complete the signup process
If for some reason you don’t want to use your credit card, I’ve found an interesting trick that lets you register on iTunes Store with a credit card usign a free iTunes Store coupon code for downloading 34 free songs worth $33.
Free iTunes Store Gift Coupon
1. Visit the gift coupon code promotion page.
3. Open iTunes and click iTunes Store (works only with United States iTunes Store).