who is singing in lines 38-46 in the bewulf story?

Answer 1

Lines 38-46 of BEOWULF here. Are you sure it is these lines?
I fail to see anyone singing.

So he was sent as a child chosen to drift on the deep.
Now the Danes granted treasures no less than those they had taken, and last they hoisted high overhead a golden banner as they gave the great one back to the Baltic with heavy hearts and mournful minds. No man can say, though clever in council or strong under sky, who might have landed that shipload of loot.

Answer 2

What translation are you using? I'm looking at the Seamus Heaney version and there isn't any singing going on.