Mumford & Sons attempting to be Bruce Springsteen's back-up dancers.

After this morning's Bruce Springsteen announcement - click HERE to read - I can't help but finding myself sucked into a black hole of Boss videos on YouTube.

Currently, I'm stuck on how adorable this video of Mumford & Sons joining Bruce on-stage to perform 'Hungry Heart' together live is.

I don't even really like Mumford, but the below just has a way of making me feel extremely happy...