Leo was fired.
The SF2 format allowed for up to 27 different modulators. The TS-10 had 16 real-time controllers. Leo spent two weeks just mapping the aftertouch to filter cutoff response. On the TS-10, it was exponential—a light touch added warmth, a hard squeeze added bite. In SF2, he had to build a piecewise linear curve. He failed. Then he failed again. Finally, he wrote a custom script in an ancient version of Python that brute-force calculated 128 breakpoints. At 4 AM on a Tuesday, he played the converted patch. He pressed down on his MIDI keyboard’s aftertouch. The sound screamed . He cried. Just a little. Ensoniq TS-10 SoundFont -SF2-
Three months in, with 47 patches converted, a power surge fried his Pinnacle card. The hard drive with the raw samples was corrupted. He had backups of the loops, but the original multi-samples—the 2,000+ individual notes—were gone. The TS-10 was a rental. It was due back in two days. Leo was fired
Today, the Ensoniq TS-10 SoundFont lives in the dark corners of thousands of hard drives. You can hear it if you know where to listen. It’s the warm, unstable pad on that lo-fi hip-hop track with 2 million YouTube views. It’s the brittle piano on that indie game soundtrack that made you nostalgic for a childhood you never had. It’s the bass in that techno track that shakes the subwoofer at 3 AM in a warehouse in Detroit. Leo spent two weeks just mapping the aftertouch
The SF2 format was a miracle of 90s programming. Unlike a simple sample dump, an SF2 file contained a complete virtual instrument: the raw audio samples, a voice-stealing algorithm, low-pass filters, LFO routings, and a multi-stage envelope generator. But the TS-10’s magic wasn’t in the raw waves—it was in the behavior : the way a flute sound would morph into a choir if you held the key down, the way aftertouch added not just vibrato but a subtle distortion, the way the “Funk” wave in the Transwave section would cycle through eight different attack transients depending on velocity.
Leo smiles. “That’s it,” he whispers. “That’s the sound.”