Video: Pearl Jam perform their unique version of 'Let It Go' from Disney's 'Frozen'

This is the most improbable cover version since Bruce Springsteen performed Lorde's 'Royals'.

Seattle legends Pearl Jam often cross over into covers territory, but rarely do they look to popular Disney animations for inspiration.

Check out their version of 'Let It Go' from last year's massive hit 'Frozen.'

It's pretty great, actually.