Tristan and Isolde, Joy (a and b) 
    
      
          "Joy (a)" 
          
        

"Joy (b)"
        
        
        Gustav Kobbé claims that Joy motives are variations of
        Desire and Wounded Tristan.
        
        
Motive Labels  
          “Theme of Joy” – (Kobbé,
          p. 133)
          “Preis
          der Treue” or “Price of Loyalty” –  (Pfohl,
          p. 219)
  		  “Joy”  – (Lavignac,
  		  p. 309)
  	      “Gratitude”
  	      
        
        Joy – Order of occurrence by Act and Scene
        Act III: Scenes 1 & 3