Record a playing error by a novice (3)
I believe the answer is:
log
'record' is the definition.
(log is a kind of record)
'a playing error by a novice' is the wordplay.
'a playing error' becomes 'og' (I can't justify this - if you can you should believe this answer much more).
'by' means one lot of letters go next to another.
'a novice' becomes 'L' (as in a learner driver with L-plates on their car).
'og' put after 'l' is 'LOG'.
Can you help me to learn more?
(Other definitions for log that I've seen before include "Sea captain's diary of voyage" , "Record; cut wood" , "Enter" , "Official record of events" , "Piece of cut wood" .)