Reason is a virtual studio rack with all the tools and instruments you need to turn your ideas into music. And it’s more than just a set of excellent synths and effects. It’s a complete music system. Step into the age of Reason. Reason comes with synthesizers, samplers, drum machine, REX file loop player, professional mastering tools, mixer, vocoder, world class effects, pattern sequencer and more. As many of each as your computer can handle. Reason is an infinitely expandable all-in-one music production environment, complete with its own realtime sequencer.