Having heard clips of Phillip Lambro's original score for the film (although admittedly not synced with it), I get the impression that it wasn't the total effort of his score that was inappropriate, but the final reel's worth, which goes into a strange cacophony of Chinese-sounding music.
A composer once told me, "you've got to start your music strong, and end it strong. Everything else in between is inconsequential." And while terrible music in the middle obviously will not due, I think this is true subconsciously to a degree that what someone remembers most are the film's main theme-- usually used in the title-- and the end theme or the last thing that they heard. Lambro's opening cue in many ways parallels Goldsmith's, with a Chinese opening and sax solo, although Goldsmith's solo benefits from a smoother, sexier performance by Uan Rasey. Of course, in the end, Lambro played Saliari to Goldsmith's Mozart, as the music of CHINATOWN is unforgettable.
Lambro has been very outspoken about the score over the years and a lot of it sounds like sour grapes to me. His book CLOSE ENCOUNTERS OF THE WORST KIND is an unintentionally funny read, but does contain his (bitter) side of the story.
