Following are a number of back-translations as well as a sample translation for translators of 1 Samuel 21:11:

• Kupsabiny: “When some of the leaders saw David, they told their king that, ‘But this one is David, who will become the king of Israel! Is he not the one whom the women talked about when they were singing that,
  ‘Saul has killed many people,
  but David has killed so countless.’?’” (Source: Kupsabiny Back Translation)
• Hiligaynon: “The officials of Akish said to him, ‘(Is) not this David the king of Israel? (Is) not he the-one the women give-praise-to while they dance and sing, ‘Saul has-killed a thousand, but David on-the-other-hand has-killed ten thousand’?’” (Source: Hiligaynon Back Translation)
• English: “But the officers of King Achish objected to David being there. They said to King Achish, ‘This man is David, the king of Israel! He is the one whom our enemies, the Israeli people, honored by dancing and singing,
  ‘Saul has killed thousands of his enemies,
  but David has killed tens of thousands of them!’’” (Source: Translation for Translators)