Pop Quiz: Forget Beyoncé and Taylor Swift — Idina Menzel was the one who won the hearts of young girls (and boys) everywhere this year with the ice princess anthem “Let It Go.” How does it feel to walk into Starbucks and see your face everywhere? [...] I walked into the Starbucks across the street from where I live, and I didn’t see my face anywhere. Next year, you’ll be playing all these famous rock venues — like Red Rocks and the Hollywood Bowl. Whether it’s on a Broadway stage or at a rock venue, it’s what makes my blood flow. Did you ever think so many little girls would be singing “Let It Go”? Every morning I wake up and somebody has sent me a video of their child singing it. People always tried to change me to make me more pop. The version that I did ended up getting played more on the radio than the pop version. If nothing else, I bet you can afford some shoes now. [...] it only works with big gowns, not pencil skirts. Aidin Vaziri is The San Francisco Chronicle’s pop music critic.