Chvrches share new single Overthinker

Chvrches have dropped a new track called Overthinker. Around the same time, the Scottish trio played a small charity show where they tested eight songs that have not been released yet. They also brought out Biffy Clyro frontman Simon Neil as a surprise guest for the night.
Which unreleased Chvrches song from that charity gig would you most want to hear first?

