A whopping 12 songs from Disney films have won Oscars for "Best Original Song," and on Sunday night, the organization may add lucky 13 to its mantle; Robert Lopez and Kristen Anderson-Lopez could take home the trophy for "Let It Go" from Frozen. In this week's Flashback Friday, we take you back to 1965 when the Sherman Brothers won Academy Awards for their work on the film Mary Poppins. Chim, chim, cher-oo.