### Clue: Chopin, Vivaldi and Scarlatti initially in vogue (3)
### Answer: FAD 
 ### Explanation: Definition: vogue
 **1st letters, respectively, of**(… initially) [ "Frederic"(Chopin) + "Antoni"(Vivaldi) **plus**(and) "Domenico"(Scarlatti) ].
Defn: …/prevailing style at a particular time.