One of the most popular digital synths ever was the DX7 from Yamaha, released in 1983. It was programmable and many people used it to create their own unique and compelling sounds. Over the years some of these sounds have made their way onto the internet in the form of sysex formatted sound files.

Raph Levien graciously wrote a synthesizer for Android that plays the sounds in these sysex files. After playing around with it, I got curious about the sounds that could be found. I googled around and gathered a few hundred sysex files. Since each file contains 32 different sounds this gave me around 7,000 different sounds to explore!

I enjoyed exploring them and thought others would as well, so I put together this application that uses familiar tunes to showcase the sounds in the sysex files I found.

So if this sounds intriguing, than install it, sit back - and tweak some tunes!

End User License Agreement available at
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What's New

Production release.
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Additional Information

November 10, 2016
Current Version
Requires Android
4.0.3 and up
Content Rating
Offered By
Thunderbolt Apps
222 E 21st Street #5A New York, NY 10010
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