MATRIXSYNTH: How to program a cheesy ANALOG FM piano sound from scratch with the Frap Tools Magnolia!

Soundtoys

Tuesday, April 14, 2026

How to program a cheesy ANALOG FM piano sound from scratch with the Frap Tools Magnolia!


video upload by Frap Tools

"In the latest video we saw how to reverse-engineer a preset, and today we'll see how to design a program from scratch! We chose a classic (and frankly, a bit overused) sound of FM synthesizers, the iconic FM piano popularized by the Yamaha DX-7. But this time, we'll make it 100% ANALOG! Follow along to learn how to implement this technique on Magnolia.

Magnolia: https://frap.tools/magnolia

00:00 Tuning the oscillators
03:18 Keytrack over the FM amount to mimic the index behavior
05:25 Velocity over the FM amount
07:24 refining the tuning, tracking
07:59 Keytrack over the FM decay
09:11 Adding some low-pass filter
09_55 Keytrack over the amplifier decay
10_16 detuning the patch
10:38 overload the filter and drive
11:40 stereo tracking
12:46 Three ways to add a tremolo (amplifier, drive, pan)
14:50 Adding chorus and delay
16:27 Closing remarks"

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