Staging directors Patrice Caurier and Moshe Leiser infuse German composer Engelbert Humperdincks fairytale opera with more than a dollop of black humor in this 2008 London performance thats both enchanting and menacing Angelika Kirchschlager and Diana Damrau play Hansel and Gretel respectively and beloved British baritone Thomas Allen portrays their father in an outstanding production led by maestro Colin Davis