Possible Clues:

• Going by the back way, always be musical at last
• Putting it back again into rhyme
• Going back to writing poetry again?
• Changing direction, vicar? Hesitate, then sign off
• Undoing call about botched serve
• Going back always to give a song at last
• Reserving for going backwards
• Going backwards
• Putting it back into poetry again, perhaps
• Did the clergyman join in the hymns with 'er on the way back?