A finally took action on Pretty Little Liars this week, as she got actively involved in both Spencer's and Hanna's lives.

But while fans were enjoying the mysterious twists and turns on "Salt Meets Wound," we wonder if they noticed the songs in the background. Have no worries, if not: we've collected them all in our Pretty Little Liars music section.

Below, we offer a few samples from the latest installment:

• The Fast Romantics - "How Do You?"
• Pigeon John - "Timebomb"
• Tennis - "Marathon"
• Electric Owls - "Darken Me"

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.