Answer: leitmotif

AnswerCrossword Clue
LEITMOTIFErda aria
LEITMOTIFCharacter-related musical theme
LEITMOTIFWagnerian strain.
LEITMOTIFWagnerian melody
leitmotif(German) a leading motif, a recurring theme in a novel, musical signature for something also LEITMOTIV
leitmotifA recurrent theme throughout a musical or literary composition, associated with a particular person, idea, or situation
leitmotifa dominant and recurring theme.