Well, it looks like Pearl Jam have joined the already well-populated ranks of those people covering songs from "Frozen." At a concert in Italy on Friday night, during their song "Daughter" they launched into an abridged version of "Let It Go."

Though it's an unlikely combination, Eddie Vedder totally pulls it off.

The barriers between pop and rock certainly seem to be breaking down—recently Bruce Springsteen covered Lorde's breakout hit "Royals." Long live poptimism!