I am a contemporary classical music composer and I am wondering if anyone knows of any programs for manipulating sound? I don't mean like gargageband or audacity. I don't want to record guitars or voice or anything and I am not looking to write electronica or beats or anything. I am looking for a program where one can manipulate several base frequencies into more complex waves by using effects, filters and automation. I used audiomulch (the perfect program for this stuff) for Windows but it is not available for OS X yet.