At country club piano, arrangement for choir really delighted (8)
I believe the answer is:
euphoric
'really delighted' is the definition.
'euphoric' can be an answer for 'delighted' (thesaurus). I am not sure about the 'really' bit.
'at country club piano arrangement for choir' is the wordplay.
'at' says to put letters next to each other.
'country club' becomes 'EU' (whimsically speaking, a club made up of countries).
'piano' becomes 'p' (musical abbreviation).
'arrangement for' indicates anagramming the letters (I've seen this in other clues).
'choir' is an anagram of 'horic'.
'eu' put next to 'p' is 'eup'.
'eup'+'horic'='EUPHORIC'
Can you help me to learn more?
(Other definitions for euphoric that I've seen before include "Co-heir up for feeling excited and joyful" , "Over the moon?" , "Having intense feeling of well-being and excitement" , "blissful result" , "Wildly happy" .)