I is for Idina, whose vocals you'll know from Wicked or Rent, or from "letting it go". We had a little Frozen going on there, but she was the Wicked Witch in Wicked, but she was actually nice. J is for Julie's sweet silvery soprano, as bright as a bell and as pure as a piano. It's Julie Andrews, she was in My Fair Lady, she played Eliza Doolittle. And then she was also Mary Poppins.