Point duet out, and another piece (5)
I believe the answer is:
etude
'piece' is the definition.
(I know that etude is a type of piece)
'point duet out' is the wordplay.
'point' becomes 'E' (compass point).
'out' indicates an anagram (out can mean wrong or inaccurate).
'duet' anagrammed gives 'tude'.
'e'+'tude'='ETUDE'
'and another' acts as a link.
(Other definitions for etude that I've seen before include "Short composition for a solo instrument" , "A short musical exercise" , "Chopin study" , "Short piece of music for solo instrument" , "short musical piece" .)