Possible Clues:

• Doctor's ___
• Directions from the brass
• They may be given wholly, by the sound of them, in church
• Edges trimmed to instructions
• They're given a wholly holy sound
• Holy ones rev one up on command
• Instructions given as to waiters
• Fabulist discerned in Irish poet's short work
• Sets to rights, according to instructions?
• Commands and edicts