High stool is for an elevated player (7)
I believe the answer is:
soloist
'an elevated player' is the definition.
'soloist' can be an answer for 'player' (soloist is a kind of player). I'm unsure of the 'an elevated' bit.
'high stool is' is the wordplay.
'high' indicates anagramming the letters (like drunk).
'stool'+'is'='stoolis'
'stoolis' is an anagram of 'SOLOIST'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for soloist that I've seen before include "One who performs" , "musician at front of stage?" , "Individual performer" , "Single performer" , "Lone performer" .)