I was honestly surprised someone said Loves Music Loves to Dance was one of Clarke's weaker novels. I thought it was one of her best. The who done it cliffhanger was executed to perfection, there are plenty enough curveballs thrown to keep you guessing. The characters are much more believable and compelling.
However, this movie was far inferior. Key characters who made the plot much more interesting were left out, most notably a couple of men who could have easily been the killer themselves, along with the man who it actually turns out to be. Its not nearly as obvious who the killer is in the book. Even many of the characters who were included were changed from the novel, sometimes in unappealing ways. Even the villain himself is far more compelling and far more dangerous in the novel.
I won't go into all the differences between the novel and the movie, there is no room or time. But don't let this third rate film discourage you from reading the book if you haven't. Its much better. Pass the film up.
All of Clarke's books with the possible exception of While My Pretty One Sleeps were done poorly on the screen. Its ashame because I feel all of them could have been good box office films in competent hands, including Loves Music Loves To Dance. I would like to see them redone someday by more competent directors and screenwriters. Doubt it though.