Our All The Music project accounts for silence. A "note" can be silence. Which could also account for rhythm. How different are these? <eighth> <eighth_rest> <

Our All The Music project accounts for silence. A "note" can be silence. Which could also account for rhythm. How different are these? <eighth> <eighth_rest> <eighth_rest> <eighth> <eighth> <quarter> <eighth_rest> <eighth> <eighth> Especially when considering copyright infringement lawsuits? Which require only "substantial similarity."