Wikipedia:Reason (software)

Reason is a digital audio workstation for creating and editing music and audio developed by Swedish software company Reason Studios (formerly known as Propellerhead Software). Reason emulates a rack of hardware synthesizers, samplers, signal processors, sequencers, and mixers, all of which can be freely interconnected in an arbitrary manner. Reason can be used either as a complete virtual music studio or as a set of virtual instruments to be used with other sequencing software in a fashion that mimics live performance.