Pearl Jam Unexpectedly Covers 'Frozen' Hit 'Let it Go'

Apparently everyone really IS in love with "Frozen."

At a concert in Milan Friday night, even classic grunge band Pearl Jam got on board with the Disney hit.

During a performance of "Daughter," lead singer Eddie Vedder lapsed into a quick rendition of the smash hit "Let it Go." As Vedder has two young daughters, was it an ode to his own princesses?

You can check out the clip below, but be warned - Eddie has got nothing on Idina Menzel with this cover.