Respuesta :
This scene takes place after Juliet has been found dead. The answer is that they feel it is too sad a day to play any music.
Answer:
The musicians refuse to play music when Peter asks because they feel it is too sad a day to play.
Explanation:
This dialogue occurs in act IV and it is the same act where Juliet fakes her death, reason why all people are in sorrow and it is not considered a happy day to play music.