The greater Falls Church-based 100-voice World Children’s Choir under the leadership of Sondra Harnes, will sing a selection as part of the program for the Richmond inauguration of Virginia’s next governor, Terry McAuliffe, on Jan. 11. The choir, founded in 1990 as a non-profit to help disadvantaged youth ages 4 to 18, recently performed at the Falls Church Episcopal Church at a holiday concert Dec. 14.