Joseph Benson's Commentary of the Old and New Testaments - Psalms 137:3
Psalms 137:3. There they that carried us away Our new masters, who had made us their slaves, and carried us captives out of our own land; required of us a song דברי שׁיר , the words of a song: in the LXX., λογους ωδων , words of songs. They required us to entertain them with our music and singing. And they that wasted us Hebrew, ותוללינו , contumulatores nostri, they that laid us on heaps, namely, that laid Jerusalem and the temple in ruins, required of us mirth, שׁמחה , joy, ... read more
Albert Barnes' Notes on the Whole Bible - Psalms 137:3
For there they that carried us away captive - The Babylonians.Required of us a song - Asked of us a song. The word does not express the idea of compulsion or force. Margin, as in Hebrew, words of a song. Perhaps the idea is that they did not merely ask music, but they wished to hear the words - the songs themselves - in which they were accustomed to praise God. This may have been a taunt, and the request may have been in derision; or it may have been seriously, and with no desire to reproach... read more