'A Song for Europe'? Have to go to bed! (3,4)
I believe the answer is:
lie down
'go to bed' is the definition.
(thesaurus)
''a song for europe'? have' is the wordplay.
''a song for europe'?' becomes 'lied' ('Lied' is 'song' in German).
'have' becomes 'own' (synonyms).
'lied'+'own'='LIE-DOWN'
'to' acts as a link.
(Other definitions for lie down that I've seen before include "Rest (with or without sleep)" , "Short rest on a bed" , "Recline" , "Take a rest (at length!)" , "Relax" .)