Musician and talking head meet odd disciple (9)
I believe the answer is:
trumpeter
'musician' is the definition.
(I know that trumpeter is a type of musician)
'talking head meet odd disciple' is the wordplay.
'head' says to take the initial letters.
'meet' says to put letters next to each other.
'odd' becomes 'rum' (rum can mean strange or dubious).
'disciple' becomes 'peter' (a disciple of Jesus).
The first letter of 'talking' is 't'.
't'+'rum'+'peter'='TRUMPETER'
'and' acts as a link.
(Other definitions for trumpeter that I've seen before include "Jumbo?" , "It's the valve operator" , "sends out signals?" , "Perhaps Nellie" , "one of a band" .)