Dr Octo REX
Articles
REX Loops: Substituting Sounds by Derek Johnson
Practically since sampling first became available, recording engineers have employed tricks for isolating drum sounds and using them to trigger new samples — perhaps to replace a weedy original sound, make a mix more contemporary, or replicate the groove played on one drum kit with the (sampled) sounds of another kit. Something like this technique can also be achieved in Reason. We’ll be using REX2 loops, as generated by Recycle and played back by the Dr:Rex device. The objective is to steal the feel of a loop and assign new sounds loaded into a Redrum kit.
Dr. Rex Octave Fun by Resonant Filter
One quite simple trick to breathe new life into Rex files is changing the octave. But if you read this blog regularly you know I don’t just stop at simple. So today we’re going to talk about controlling the octave of Rex files in Dr. Rex.
How to Create Twisted Grooves by Mo Volans
There are a huge number of tools available for slicing and dicing loops but one of the original (and still one of the best) is Propellerheads Recycle. When the resulting .Rex files are manipulated in Reason’s Dr. Rex player great results are possible.
Ask Dr. REX! by Fredrik Hägglund
In this opening chapter of Discovering Reason we will explore this versatile device. We’ll start off with the simpler and more common applications, and as the article progresses we dig deeper until we reach the very bottom of Dr.REX’s bag of tricks!
Getting Creative With Dr REX by Resonant Filter
Dr Rex is an often overlooked instrument in Propellerhead’s Reason Software. At first glance it looks like a mere sample player, but it’s the things you can do with it that are the most interesting. One of my favorite tricks with Dr Rex and Rex files in general is to take one file’s pattern, another file’s sound, and combine them.

