Context of Hansel and Gretel : Märchen (fairytale) in three acts, music, Engelbert Humperdinck ; libretto, Adelheid Wette, after the fairytale by Jacob Ludwig and Wilhelm Carl Grimm ; directed for the screen by Sue Judd ; directed for the Royal Opera by Moseh Leisner and Patrica Caurier ; a Royal Opera House/Opus Arte co-production in association with NHK/BBC, (electronic resource)