I need help

[benswoman]

This song has driven me crazy since the first time I saw the episode it was in but I've not been able to figure out what the song is. I know that I should know it, but I just can't remember :(. That's why I made a clip of it so that maybe some of you might be able to help me figure it out.

There are a few spoken lines mixed in, but the song is dominate for most of this little clip.

Anyone know what it is?

song clip