Conversation so far:
What was the classic lineup?
CANNOTANSWER.
Who was in the classic lineup?
basically recorded by the Humphreys/McCluskey duo, although included some guest drums from Id drummer Malcolm Holmes, and saxophone from Wirral musician Martin Cooper.
What songs did they perform?
"Messages.
Were there any others?
"Enola Gay".

Question: Did they perform with any other bands or artists during this time?
Self-contained rewrite: In addition to "Enola Gay", did Orchestral Manoeuvres in the Dark perform with any other bands or artist?