@William said:
However, to return to film scoring themes, it is just as practical to create an entire score out of a single melody (with a few interludes). This can be observed in the great score to Somewhere in Time by John Barry. He simply didn't need much more after he composed that theme. Whereas a lesser composer will have to bust his ass doing scene after scene separately, Barry could kick back and do a slight variaton here, a few chords there, once he had that perfect melody played by rapturous strings. So that is the OPPOSITE situation from clever motif development and variation.
I agree William. The "Somewhere in Time" theme is one of my favorite soundtracks. Of course, Barry did have a little help from Rachmanoff but I agree his melody, or theme if you will, pretty much carried all the way through in that movie. I own that soundtrack and, you're right, it's just variations of the same theme with some other incidental music here and there.
I think in many ways it depends on the film. The one theme pony for Somewhere in Time worked very well but, of course, it wouldn't work for everything. I was watching Scarface (1983 version) the other day and I was impressed with how Giorgio Moroder assigned different themes to just about every major character in the film and it didn't sound pertentious at all like it usually does. I think the reason for that was all of the variations of each theme. You hardly noticed those themes were there yet they moved you all the same. I know some complain that the nearly electronic score for Scarface was a bit contrived but not too shaby for a former Disco/Pop record producer. I really liked those themes.