Melodies and prayers put on by those with superior affectations (4,3,6)
I believe the answer is:
airs and graces
'those with superior affectations' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'melodies and prayers put on' is the wordplay.
'melodies' becomes 'airs' ('air' can be a synonym of 'melody').
'prayers' becomes 'graces' (grace is a kind of prayer).
'put on' is a charade indicator (letters next to each other).
'airs'+'and'+'graces'='AIRS AND GRACES'
'by' acts as a link.
Can you help me to learn more?
(Other definitions for airs and graces that I've seen before include "Affectations of a 'lady', perhaps" , "Affectedly refined manners" , "Affectedly elegant behaviour" , "affected attitude" , "Affected elegance" .)