what were the specific customs or expectations of captors asking for songs from exiles in that era?

Psalm 137:1-4

“By the rivers of Babylon, there we sat down. Yes, we wept, when we remembered Zion. On the willows in its midst, we hung up our harps. For there, those who led us captive asked us for songs. Those who plundered us asked for mirth, saying, “Sing us one of the songs of Zion!” How can we sing Yahweh’s song in a foreign land?”

This psalm is a lament from Jewish exiles living in Babylon after the destruction of Jerusalem in 586 BCE. It captures their deep grief and longing for their homeland, particularly when their captors mockingly ask them to sing joyful songs of their faith.

How do we respond when confronted with situations where our deepest values or traditions are trivialized or exploited by others?