Albert Barnes Commentary Jeremiah 48:36

"Therefore my heart soundeth for Moab like pipes, and my heart soundeth like pipes for the men of Kir-heres: therefore the abundance that he hath gotten is perished." — Jeremiah 48:36 (ASV)

Like pipes – A wind instrument, used at funerals (Matthew 9:23).

The riches that he has acquired – literally, “that which remains over, a superfluity.”