Trumpeter amazing the panel (8)
I believe the answer is:
elephant
'trumpeter' is the definition.
(I've seen this before)
'amazing the panel' is the wordplay.
'amazing' indicates an anagram.
'the'+'panel'='thepanel'
'thepanel' is an anagram of 'ELEPHANT'.
(Other definitions for elephant that I've seen before include "Creature" , "Trunked mammal" , "Largest land mammal" , "Huge African or Indian animal" , "Animal with a trunk" .)