Possible Clues:

• Richer post (anag) — top administrative position in some universities and colleges
• Chorister playing piano in clergyman's office
• New chorister quiet in church office
• Chest prior put out in church office
• Clergyman's office damaged, we hear: church ceremony won't get started
• One leaves choir to work with priest in his office
• Parson's position on ambassador leaving bully's joint