Performs songs at the piano (5)
I believe the answer is:
plays
'performs' is the definition.
(I've seen this in another clue)
'songs at the piano' is the wordplay.
'songs' becomes 'lays' ('lay' is a literary term for a song).
'at' means one lot of letters go next to another (I've seen this in other clues).
'the piano' becomes 'p' (musical abbreviation).
'lays' after 'p' is 'PLAYS'.
(Other definitions for plays that I've seen before include "Stage works" , "Frolics" , "Theatrical works" , "Dramatist's works" , "Dramatic works" .)