Psalm 137 · a question people ask
Did the captives sing for the people who asked them to?
The psalm doesn't say. It says they hung up their harps: "On the willows in that land, we hung up our harps" (137:2). The next verse opens with For and gives the demand: "For there, those who led us captive asked us for songs. Those who tormented us demanded songs of joy: “Sing us one of the songs of Zion!”" (137:3). Then comes a question, not an answer: "How can we sing the LORD’s song in a foreign land?" (137:4). From there the psalm turns to Jerusalem (137:5-6) and never says whether anyone sang. These notes don't say more than the psalm does.
The verses
“On the willows in that land, we hung up our harps. For there, those who led us captive asked us for songs. Those who tormented us demanded songs of joy: “Sing us one of the songs of Zion!” How can we sing the LORD’s song in a foreign land? If I forget you, Jerusalem, let my right hand forget its skill. Let my tongue stick to the roof of my mouth if I don’t remember you, if I don’t prefer Jerusalem above my chief joy.”