Hymn from the works by European variously recalled at intervals (8)
I believe the answer is:
alleluia
'hymn' is the definition.
(thesaurus)
'the works by european variously recalled at intervals' is the wordplay.
I cannot really see how this works, but
'works' could be 'all' (I have seen 'The works' mean 'all' so perhaps 'works' could also mean 'all') and 'all' is found within the answer.
'european' could be 'e' (abbreviation e.g. EU) and 'e' is found in the answer.
This explanation may well be incorrect...
'from' acts as a link.
(Other definitions for alleluia that I've seen before include "Biblical exhortation of praise to the Lord" , "Exclamation of praise" , "God be praised" , "Hebrew word meaning praise to God" , "Religious word to express praise or thanks" .)