Milton says that it's very quiet in Heaven. The word "silent" is repeated several times. The heavenly choir is there, but it is mute. It seems that is all a bit too perfect even for Milton to describe.Everyone is standing around just looking at God:"From his sight received/Beatitude past utterance" (Book 3, l.62)
And for this reason, why go to Heaven if there is no passion, no noise, just peace and quiet. Didn't God say that in Heaven we can have anything yet people are just standing like statues.
I'd rather go to hell and live in a state of pandemonium. Where I can feel passion and have fantastical conversations.