Circular piece of wood Norwegian put up (5)
I believe the answer is:
rondo
'circular piece' is the definition.
(piece of music based on a recurring theme)
'of wood norwegian put up' is the wordplay.
'of' says the answer is hidden in the clue.
'put up' says the letters should be written in reverse.
'odnor' can be found hidden inside 'wood norwegian'.
'odnor' in reverse letter order is 'RONDO'.
(Other definitions for rondo that I've seen before include "rota, maybe" , "A collection of notes" , "Piece in the form of a sonata's last movement, say" , "Musical piece with a recurring theme" , "part of a sonata" .)