How to turn off Genius??

How do I turn off this Genius thing? I have had the iPhone 3G for several months and no problems. No I select an artist and album. The first song plays, no problem. Then the next song is some other artist on another album. It appears to have generated a Genius play list and when I select the album it goes to the play list. Specifically I select a Neil Young album the next song is Springsteen. Looking at the list there is a list of 2 songs that includes Young, Springsteen, Crocker, and others. I appear not to have the problem when selecting other artists.