Peculiar red and orange instrument (4,5)
I believe the answer is:
reed organ
'instrument' is the definition.
(reed organ is a kind of instrument)
'peculiar red and orange' is the wordplay.
'peculiar' indicates an anagram (I've seen this in other clues).
'and' means one lot of letters go next to another (I've seen this in other clues).
'red' after 'orange' is 'orangered'.
'orangered' is an anagram of 'REED-ORGAN'.
(Other definitions for reed organ that I've seen before include "Melody Maker?" , "supports traditional services" , "small instrument" , "musical instrument" , "What you might hear" .)