Simplify the following text for a Grade 5 native English-speaking person.
Original: Kurwenal replies that only Isoldeâ s arrival can save Tristan , and the shepherd offers to keep watch and claims that he will pipe a joyful tune to mark the arrival of any ship .
Simplified: Kurwenal says that only Isoldeâ s arrival can save Tristan . The shepherd says he will keep watch and pipe a happy tune to mark the arrival of any ship .