When looking for your favorite Jon Spencer Blues Explosion Band songs, knowing which sites to use, and which engines to download from in order to get the best sound, and your favorite songs, is something that has to be considered before you decide to buy a song from that download provider. So, whether you use Itunes, Pandora, or any other download engine, you have to first listen to a demo of the song, and be able to listen to a small portion of the song, to make sure that it is the version of the song you want to buy, and for you to know that the song you are buying is the song you actually want to purchase. Since many bands do covers, and they do different versions of one song, when you download music, and there are several songs with the same title, you have to listen to a demo of all of them, before you buy, in order to know you are buying the right version you want. You can also buy the entire album, but if you do not like all songs, then purchasing song by song is the only way to buy them on the web.