Musical ability that's central throughout rehearsal clearly heard (3)
I believe the answer is:
ear
'musical ability' is the definition.
(I've seen this before)
'central throughout rehearsal clearly heard' is the wordplay.
'EAR' is hidden within the letters.
But, I'm uncertain how the hidden word is indicated.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for ear that I've seen before include "Seed-bearing spike" , "Part of a cereal plant containing the seeds" , "Part of corn plant" , "Aural organ" , "It's used in hearing" .)