Is this where we get The Bridge in popular music? Does it come from an abridgement to what came before?
It seems as if Hamlet is making music allusions in this sections so it could well be that he means abridgement musically. That is, he’s singing a song and the players have arrived to sing the next bit. Which is a shift in the tone and sound of the song. Makes sense as The Bridge to me. He and Polonius have been singing the verse and the chorus and the Players take them to the bridge.
If he doesn’t mean it musically, I’m not sure how he means it. The Players are his abridgement, that much is clear.
What the abridgement is outside of a musical context, well, that’s a bit of a mystery to me.