Man-woman relationships 31 Operas 17 Music 11 History and criticism 10 History 9 Love 9 Singers 5 Máis ... Triangles (Interpersonal relations) 5 Valkyries (Norse mythology) 5 Musique 4 Mythology, Norse 4 Operas, Chinese 4 Painters 4 Quests (Expeditions) 4 Rings 4 Songs, Chinese 4 Composers 3 Courtesans 3 Dwarfs (Folklore) 3 Giants (Folklore) 3 Gods 3 Murder 3 Revenge 3 Symphonies 3 Aspect social 2 Betrayal 2 Chansons chinoises 2 Compositeurs 2 Compositores 2 Desdemona (Fictitious character) 2 menos ...