Prayer girl elevated mass with melodic piece (3,5)
I believe the answer is:
ave maria
'prayer' is the definition.
(Ave Maria is an example)
'girl elevated mass with melodic piece' is the wordplay.
'girl' becomes 'eva'.
'elevated' shows that the letters should be reversed in order.
'mass with melodic piece' becomes 'maria' (I can't justify this - if you can you should give a lot more credence to this answer).
'eva' in reverse letter order is 'ave'.
'ave'+'maria'='AVE MARIA'
Can you help me to learn more?
(Other definitions for ave maria that I've seen before include "Hail Mary, in Latin" , "Hail Mary (Lat.)" , "Hail Mary in prayer (3.5)" , "Work of Schubert" , "Prayer to the Virgin Mary" .)