irony: the grave diggers are talkling about prince hamlet while he is right there
The setting for Act 5 Scene 1 of Hamlet is a graveyard. This sorts with the theme of death which has been flowing through the play.
Shakespeare wrote the scene with the gravediggers into Hamlet to make a comic break and to give a part to the company's clown.
Prince Hamlet realizes that it was a skull of a jester whom Prince Hamlet once knew he was Yorick
There are no publicly known songs that specifically go with each scene of Hamlet.
In Scene 2, Horatio tells Hamlet that he has seen the ghost of Hamlet's father walking the battlements. Hamlet is much amazed and insists on accompanying Horatio to the battlements to keep watch. That's what they are doing in Scene 4.
The beginning plot of Hamlet ended in the last scene of Act 5.
In the first Scene, Act I scene 1, the Ghost is seen by sentinels at a platform outside the castle. (The "platform" is a raised area, an earthen mound, that gives an elevated viewing position. In performance, stage or movie, the first scene is often set on the castle ramparts, but Shakespeare's dialogue explicitly contradicts that.) In Scene 4 (Act I scene 4) the Ghost is seen by Hamlet, Horatio, and Marcellus, again at the platform. In Scene 5 (Act I scene 5) the Ghost is still being seen by Hamlet, alone now, at some distance from the platform. (This scene is probably set in or near the graveyard, but the location is not explicit in the dialogue, and identifying the setting as the graveyard relies on subtle details of interpretation.) In Scene 11 (Act 3 scene 4), the Closet Scene, the Ghost is seen by Hamlet (but not by Gertrude) in Gertrude's private room. So, overall, the Ghost appears in four Scenes, at three locations. If the questioner only wanted to know where the Ghost first appears, the answer is: at the sentinels' platform. And that happens in the first Scene.
Horatio, in Act 1 scene 1. Hamlet doesn't see it until scene 4. It has to be this way because in scene 2 Horatio tells Hamlet that he has seen the Ghost.
Hamlet. See http://www.opensourceshakespeare.org/views/plays/play_view.php?WorkID=hamlet&Act=1&Scene=1&Scope=scene
midnight
Horatio plans to go meet Hamlet at Elsinore, which he does in Act 1 Scene 2. Horatio plans to meet Hamlet on the battlements, which he does in Act I Scene 4. Horatio plans to meet Hamlet at the play, and does in Act 3 Scene 2. Horatio has no plans to meet Hamlet in England.
Hamlet - questioning the meaning of life