In Preferences > Control Surfaces , use "Easy MIDI Inputs" to auto-detect your MIDI keyboard or controller.
To properly install and set up on Windows, follow this guide based on official Reason Studios documentation and installation manuals. 1. System Requirements & Preparation
5.5 GB for the main program, plus up to 20 GB additional for optional content and scratch space. Reason Studios Reason 12.5.0 [WiN]
When you first launch Reason 12.5.0, you must configure your hardware:
Go to Edit > Preferences > Audio . Select your audio interface's ASIO driver . Set the Sample Rate (typically 44.1 or 48 kHz) and Buffer Size (lower values like 256 reduce latency for recording). In Preferences > Control Surfaces , use "Easy
Move the downloaded .zip file to your Desktop. Right-click it and select "Extract All" to a new folder.
Audio interface with an ASIO driver is required for low-latency performance. 2. Installation Steps System Requirements & Preparation 5
Open the extracted folder and double-click Install Reason.exe .