Group of performers dropping soprano in successful musical (4)
I believe the answer is:
cats
'musical' is the definition.
(Andrew Lloyd Webber musical)
'group of performers dropping soprano in successful' is the wordplay.
'group of performers' becomes 'cast' (I've seen this in another clue).
'dropping' is a deletion indicator.
'soprano' becomes 's' (musical abbreviation).
'in successful' becomes 's' (I am not sure about this - if you are sure you should believe this answer much more).
'cast' with 's' taken away is 'cat'.
'cat'+'s'='CATS'
Can you help me to learn more?
(Other definitions for cats that I've seen before include "Spectacular Llyod Webber feline musical" , "Feline mammals" , "1981 Lloyd Webber musical" , "Some 6 Downs" , "Feline musical by Andrew Lloyd Webber" .)