Hammerstein's foremost skill as provider of lyrics for Rodgers (4)
I believe the answer is:
hart
'provider of lyrics for rodgers' is the definition.
I can't tell whether this defines the answer.
'hammerstein's foremost skill' is the wordplay.
'foremost' suggests taking the first letters.
'skill' becomes 'art' (both can mean a talent).
The first letter of 'hammersteins' is 'h'.
'h'+'art'='HART'
'as' is the link.
Can you help me to learn more?
(Other definitions for hart that I've seen before include "Ruminative type" , "Richard Rodgers and Lorenz . . . . were famous musical partnership" , "Adult male red deer" , "Male red-deer" , "Stag" .)