The songwriting team behind the Oscar-winning song “Let It Go” from Frozen have been tapped to write a musical number for host Neil Patrick Harris which he will perform during the show on February 22. The multimedia sequence by Kristen Anderson-Lopez and Robert Lopez is titled “Moving Pictures”. "We love the Oscars and have always been huge Neil Patrick Harris fans, so when he asked us to write him a song for this year's show we said, 'Yes!' before he could finish the…