The one who takes notes and a tubular wind instrument (8)
I believe the answer is:
recorder
'the one who takes notes and a tubular wind instrument' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for recorder that I've seen before include "Woodwind instrument; official" , "One taking down notes" , "Wind instrument - historian, perhaps" , "Instrument of the flute family" , "Registrar" .)