I am looking at it with a bit of an open mind because it would appear that the actual scene where Han is Loaded on to Slave 1 has a missing scene... This explains in the Gout the music for the Slave 1 scene being screwed up and cut short

It was meant to Have Fett climbing a ladder and saying "Seal it"

Also the whole Slave 1 sequence was meant to take place Just before the heroes ran through the door to try and save him from being carted off so it was moved because of script revision.

The special edition sorts the music problem out but also (This is the part I am not sure about...) Perhaps slows down the score so it joins the light saber duel and was perhaps never originally intended to?.

I was trying to sneak in something akin to what was in the script just before they get to the landing bay as a kind of 50/50... Half way house bit of both.

I was trying to show the Carbonite shrouded in the darkness of the cargo bay with the lights on the carbonite block would be the only visible light once the cargo door shut. But yeah bit dull perhaps... I was trying to get the emotional connection of Han and Leia. Han shrouded in the Dark like what will happen to him....