Final answer:
Wagner's music incorporated leitmotives, which are specific themes or musical phrases representing characters or ideas.
Step-by-step explanation:
Wagner's music incorporated leitmotives, which are specific themes or musical phrases representing characters or ideas. These leitmotives were recurring musical motifs that helped to convey and identify characters, themes, or emotions in his compositions. For example, in Wagner's opera 'Tristan und Isolde,' there is a leitmotif associated with the love between the two main characters, which appears throughout the opera.