"Sing!" is an Academy Award-nominated film by Freida Lee Mock that tells the story of how a community group, amid severe cutbacks in the arts, is able to develop a children's chorus that is one of the best in the country. Freida Lee Mock's "Sing Opera!" is the sequel to "Sing!", and it captures sixty-five singers of the Los Angeles Children's Chorus as they strive to hone their vocal talents for the 2007 world premiere of the family opera, "Keepers Of The Night". From early rehearsals to opening night, the children work alongside professional artists and renowned opera singers such as Soprano Lynette Tapia, Baritone Malcom Mackenzie and Mezzo-Soprano Suzanna Guzman.