I'm assuming, by reference to the 1955 and 1998 "versions," that you mean the movie version and the National Theatre production that has been released on DVD. I also assume that you know that the songs in question have always been part of the stage text, from 1943 onwards, and were merely cut for the movie, largely (though not entirely) for reasons of running time.
You bring up an interesting question for advanced students to discuss - I do something similar with several segments from
Sweeney Todd in one of my classes. It's a fascinating creative/academic topic, and we usually have great chats about it.
"Lonely Room" does flesh out Jud's motivations, as well as his point of view regarding Curly, so that he's not simply mean and threatening merely because he's mean and threatening. In this way, he's more than a stock villain, which he rather becomes in the movie. But I hardly think that the song makes him downright sympathetic.
Aside from the text, though, my recollection is that critics reviewing the '98 production were responding as much to Shuler Hensley's
portrayal of Jud as they were to any fuller text that was being used - one reason why Hensley was one of the few members of that London cast who were used again when that production was replicated in New York a few years later. I have rarely seen such superlatives written about an actor taking on a role that many people had played before.
Your discussion might be a good time to teach students about copyright issues, too - namely, that, if directing the show, they would have to get the licensers' permission to cut the songs, and such requests are not always granted. (Rodgers and Hammerstein co-produced the movie version of
Oklahoma!, so they could make cuts as they wished, but that doesn't necessarily imply their approval of making those same cuts in stage productions.) That could lead to more discussion - would you go ahead and do the show, having to include songs that you as a director would prefer to cut, or would you choose another show?
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Jeff Grove
Theatre Teacher, Aesthetics Department Chair
Stanton College Preparatory School
Jacksonville FL