THEME:   both words of a two-word phrase can be substituted for by homonyms   
GOOD ONES:     Composer Dvorjak in hiding?   CHACHED CHECK [cashed and check = cashed check]   
Demands for quiet from downstairs tenant?   CEILING WHACKS [sealing and wax = sealing wax]   
Wildebeests [note spelling] slowing down?   BRAKING GNUS [breaking and news = breaking news]   
Proteges, e.g.   MAZDAS [this one stumped me for awhile]   
Cutting-edge professional?   SURGEON   
Dolphin, e.g.   MIAMIAN [like Mazda, it gives me pause --- and the animals may also be native to Miami shores]   
One of Kramden's hardy followers?   HAR [Ralph of "The Honeymooners" would say "hardy har-har" ironically.  Seems possible only for the Geritol crowd --- of which I am one]      
BTW:   NAS, STU Sutcliffe, and DEPECHE Mode make up for HAR [I liked MOOD Indigo better both as a clue and as music], but nothing can atone for YTTRIA.      
ASSISI and CAPRI were happy reminders of a great vacation, especially Capri which I think is my favorite place visited, including all of Hawaii.         
RATING:    
 
  
 
Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun