I selected some samples of cd covers done by mostly unknown designers to upcoming artists, I called the selection unknown because you provably haven't seen most of these covers before. A great option to help you build up your portfolio is to look for upcoming artists that are also looking to grow in their industry, that's when the great mix of music and design comes along, you can get your work out there and get a musician happy at the same time.
About the author
My name is Paulo Canabarro, I'm a passionate web designer and enthusiastic blogger here at abduzeedo. You can find out more about me, and my work at paulocanabarro.com. Say hello on twitter @paul0v2.