Strings for Orpheus (4)
I believe the answer is:
lyre
'strings for orpheus' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lyre that I've seen before include "Ancient harp-like instrument" , "Ancient Greek stringed instrument" , "Harp used by ancient Greeks" , "Plucked instrument" , "Sort of harp" .)