Smoked beef initially introduced by former music academy (8)
I believe the answer is:
pastrami
'smoked beef' is the definition.
(type of smoked meat)
'initially introduced by former music academy' is the wordplay.
'initially' indicates taking the first letters.
'by' says to put letters next to each other.
'former' becomes 'past' (similar in meaning).
'music academy' becomes 'RAM' (Royal Academy of Music).
The initial letter of 'introduced' is 'i'.
'past'+'ram'='pastram'
'i' after 'pastram' is 'PASTRAMI'.
(Other definitions for pastrami that I've seen before include "Tapered tuck; missile" , "smoked joint" , "A tramp is (anag) - meat" , "Smoked, highly-seasoned cut of beef" , "Highly seasoned cut of smoked beef" .)