Juliett with a gong touring rock festival (8)
I believe the answer is:
jamboree
'festival' is the definition.
(thesaurus)
'juliett with a gong touring rock' is the wordplay.
I cannot really understand how this works, but
'a' is within the answer.
'rock' could be 'ore' (ores are found in rocks) and 'ore' is found in the answer.
'gong' could be 'mbe' (Member of the Order of the British Empire) and 'mbe' is found in the leftover letters.
A single letter 'j' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for jamboree that I've seen before include "Boy Scouts' international gathering" , "Large and lively party" , "Large scout/guide rally" , "Large scout rally" , "Scout gathering; big party" .)