Maybe Bob Harris's debut transformed radio? (6)
I believe the answer is:
hairdo
'maybe bob' is the definition.
(bob is a type of hairdo)
'harris's debut transformed radio?' is the wordplay.
'debut' indicates taking the first letters.
'transformed' indicates anagramming the letters.
The initial letter of 'harris' is 'h'.
'radio' anagrammed gives 'airdo'.
'h'+'airdo'='HAIRDO'
(Other definitions for hairdo that I've seen before include "Arrangement of locks" , "Possibly cut" , "The process of styling hirsute head" , "that may go with a bang?" , "Barnet" .)