Hurry to find note on tree (4)
I believe the answer is:
dash
'hurry' is the definition.
(I know that dash is a type of hurry)
'note on tree' is the wordplay.
'note' becomes 'd' (musical note).
'on' says to put letters next to each other.
'tree' becomes 'ash' (ash is a kind of tree).
'd'+'ash'='DASH'
'to find' acts as a link.
(Other definitions for dash that I've seen before include "- - ; panache" , "Go quickly" , "style" , "Run fast with flair" , "Elan; punctuation mark" .)