Following are a number of back-translations as well as a sample translation for translators of Isaiah 5:1:

• Kupsabiny: “Please, listen to me singing to you a song of a friend
  and his field of grapes.
  The friend has a field,
  which is on a fertile mountain/hill.” (Source: Kupsabiny Back Translation)
• Newari: “I will sing a song for the one I love
  I will sing a song about his vineyard —
  my loved one has a vineyard
  on a fertile hill.” (Source: Newari Back Translation)
• Hiligaynon: “I will-sing for my beloved, about his field of grapes/(vineyard):
  My beloved has a field of grapes/(vineyard) on the mountain where the land is fertile/good.” (Source: Hiligaynon Back Translation)