Sending up musical traveller on island is out of order (11)
I believe the answer is:
inoperative
'out of order' is the definition.
(thesaurus)
'sending up musical traveller on island' is the subsidiary indication.
'sending up' is a reversal indicator.
'musical' becomes 'evita' (I've seen this before).
'traveller' becomes 'rep'.
'island' becomes 'i'.
'evita'+'rep'+'on'+'i'='evitareponi'
'evitareponi' written backwards gives 'inoperative'.
'is' is the link.
(Other definitions for inoperative that I've seen before include "It's useless" , "with no effect" , "Anna -, Russian poet (Requiem)" , "Not in working order" .)