http://www.pandora.com
You can not always get the same tune you want, but the tunes will be in the same genre and style you want to here..
you can also get info on the artist, album, song and most lyrics
in lyrics search it give info about the tune for example this merle haggard tune "honky tonkin"
http://www.pandora.com/music/song/merle+haggard/honky+tonkin#lyrics