Fall for a doctor during a lute composition (6)
I believe the answer is:
tumble
'fall' is the definition.
('tumble' can be a synonym of 'fall')
'a doctor during a lute composition' is the wordplay.
'a doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus).
'during' indicates putting letters inside.
'composition' indicates anagramming the letters.
'lute' anagrammed gives 'tule'.
'mb' put inside 'tule' is 'TUMBLE'.
'for' acts as a link.
(Other definitions for tumble that I've seen before include "Fall, roll, twist" , "Roll over and over like acrobat or pigeon" , "Roll and turn like a gymnast" , "An acrobatic feat of rolling or turning end over end" , "Suddenly fall" .)