Broadway star Idina Menzel says she has not yet grown tired of singing her big hit "Let It Go," even as she embarks on a 50-city world tour. Menzel, the star of musicals "Wicked" and "Rent," said she gets to see new nuances in the Oscar-winning theme song from Disney's 2013 animated film "Frozen." "I do that with 'Let It Go,' and I also use it as a time to connect with the young people in my audience and have them sing along," Menzel told Reuters Television.