Possible Clues:

• Outgoing hymn is like a slump
• Of an economic slump
• Music played as the clergy exit
• Hymn sung after service
• Hymn sung on withdrawal
• Going for a song? The opposite -- get a pound after slump
• Hymn sung at end of service
• Hymn after service
• Closing hymn
• Song played as everyone clears out of a wedding