Upon winning the Oscar for Best Original Song, Robert Lopez — who wrote "Let It Go" — also won a rare achievement: he became an EGOT. An EGOT is someone who has won an Emmy, a Grammy, an Oscar and a Tony. Basically, it's the grand slam of entertainment.
Lopez wrote "Let It Go" for Disney's "Frozen" with his wife, Kristen Anderson–Lopez. The musical theater writer won the Tony and Grammy for his work on Avenue Q and The Book of Mormon and an Emmy for his work on Scrubs.