使用javascript DOM遍历表

I know this is the simplest problem ever, but I can't seem to find the answer and I'm searching in the dark, so a little help is appreciated. I'm trying to get the text in the node where class='song_artist'. I have a reference to the parent node, but just can't get to the text I'm looking for. My html looks like this: I know this is the simplest problem ever, but I