Following are a number of back-translations as well as a sample translation for translators of Isaiah 5:12:

• Kupsabiny: “Those people only think of feasts,
  they spend all their time playing lyres and drinking wine,
  but they do not know what God is doing.” (Source: Kupsabiny Back Translation)
• Newari: “At their feasts they have harps lyres,
  tambourines, flutes and wine.
  But they do not think at all
  about what the LORD is doing.” (Source: Newari Back Translation)
• Hiligaynon: “In your (plur.) feasts/celebrations you (plur.) have bands and wines. But you (plur.) do- not -pay-attention to what the LORD is-doing.” (Source: Hiligaynon Back Translation)