The Reason Studios Rebirth
ReBirth RB-338 is a software synthesizer for Microsoft Windows, Mac OS 8-9 and iOS for the iPhone, iPod Touch and iPad.It was developed by Propellerhead Software, and its first alpha version (for Mac OS) was publicly released in December 1996. Propellerhead Software ceased developing the original program in January 1999. Support for desktop versions was officially discontinued in September 2005.
So yeah, in a nutshell, ReBirth was a simple program that emulated Roland TB-303 synthesizers and a Roland TR-808 and also a Roland TR-909 drum machine. It kind of was the first Propellerheads "kid". After ReBirth The Props started to develope Reason.
And this is what the Rebirth looks like::
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