Three players (4)
I believe the answer is:
trio
'three players' is the definition.
(three musicians)
This is all the clue.
(Other definitions for trio that I've seen before include "Beethoven's 'Archduke', for example" , "A group or set of three" , "Beethoven's 'Archduke', for instance" , "Beethoven's 'Archduke': famous piece written for this ensemble" , "Group of Magi?" .)