Organising rave, aim to include a work by Schubert (3,5)
I believe the answer is:
ave maria
'by schubert' is the definition.
(I know that Ave Maria lyrics by Franz Schubert)
'organising rave aim to include a' is the wordplay.
'organising' is an anagram indicator.
'to include' indicates putting letters inside.
'rave'+'aim'='raveaim'
'raveaim' is an anagram of 'avemria'.
'avemria' enclosing 'a' is 'AVE MARIA'.
'work' acts as a link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for ave maria that I've seen before include "Hail Mary in prayer (3.5)" , "Catholic prayer" , "Hail Mary (Lat.)" , "Prayer to the Virgin Mary" , "Hail Mary, in Latin" .)