Instrument for Rick Wakeman Roger Dean transformed? (4,5)
I believe the answer is:
reed organ
'instrument' is the definition.
(I know that reed organ is a type of instrument)
'roger dean transformed?' is the wordplay.
'transformed?' is an anagram indicator.
'roger'+'dean'='rogerdean'
'rogerdean' is an anagram of 'REED-ORGAN'.
'for rick wakeman' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for reed organ that I've seen before include "Melody Maker?" , "small instrument" , "musical instrument" , "Keyboard instrument, harmonium" , "What you might hear" .)