If you have a Mac you need to have this program. Plus, you are able to use your Quartz Compositions. There's a trial download. I suggest you visit the site and take a look at what it can do.
Minimum Requirements - Mac (2010 model or later) - Mac OS X 10.10 - Scratch Live 1.9.2, Serato DJ 1.6, or Serato DJ Pro
Basic Controls 101