Possible Clues:

• Musical phrase about fine female artist's undesirable people
• Play jazz before service, with noisy rabble
• Flirty friar collects fine, following female faex populi
• Improvise service following rabble
• Constantly repeated phrase about fine female artist is rubbish
• The mob, to a snob
• Sends-up Party welcoming remote Irish men - not what you'd call the elite
• Undesirable common people
• Foolish friar receiving fine, leading very loud mob
• Piece of music at service primarily for common people