They are performed by one going east or west (5)
I believe the answer is:
solos
'they' is the definition.
Both the definition and answer are plural nouns.
Maybe there's a link between them I don't understand?
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for solos that I've seen before include "Pieces of music for one voice or instrument" , "Numbers" , "Passages for one player" , "Musical passages for one instrument" , "Unaccompanied parts" .)