Apple iTunes and Amazon.com allow users to legally purchase and download full albums. Both services allow users to sample songs off the album before purchasing. Individual songs from various albums are also available for purchase and download. As of 2015, Amazon.com also allows users to purchase CD and vinyl albums.
NoiseTrade.com is a music service that allows users to legally download free music. Independent artists, who use the service as a promotional platform, provide most of the free songs and full albums. The website requires users to provide a valid email address and ZIP code before downloading. If desired, users can make donations to their favorite artists.